Another site:
AllTop 200 most popular tests to learn English...
1) Test de niveau anglais (webmaster) 6 770 773
2) Placement test : grammar for beginners (lucile83) 5 979 224
3) A/AN (webmaster) 5 356 893
4) Auxiliary BE (webmaster) 3 220 315
5) Present continuous (webmaster) 2 993 784
6) Present simple (webmaster) 2 897 294
7) Present simple (webmaster) 2 592 519
8) Present continuous (webmaster) 2 423 666
9) Adjectives (webmaster) 2 091 087
10) A/an (anonyme) 2 010 752
11) Present perfect simple (webmaster) 1 634 743
12) Vocabulary - Placement test (bridg) 1 617 094
13) Preterite (webmaster) 1 614 719
14) Short placement test (webmaster) 1 441 618
15) Preterite (webmaster) 1 439 415
16) To be (bridg) 1 403 405
17) What time is it? (webmaster) 1 346 528
18) Present perfect (webmaster) 1 338 725
19) The alphabet in English (webmaster) 1 318 695
20) Adjectives (lucile83) 1 213 323
21) What time is it? (webmaster) 1 203 735
22) Numbers (webmaster) 1 187 161
23) 'A' ou 'An' (anonyme) 1 171 796
24) Two presents: present continuous, present simple (webmaster) 1 145 911
25) To be (bridg) 1 143 428
26) Comparatives / Superlatives (webmaster) 1 095 327
27) Numbers (webmaster) 1 068 368
28) CAN / MUST (webmaster) 1 056 907
29) THE/ A / AN / nothing (webmaster) 1 028 960
30) Comparatives (webmaster) 1 005 652
31) Family life (bridg) 998 696
32) Numbers > 100 (webmaster) 984 939
33) Future (going to/will/present continuous) (anonyme) 960 549
34) Plural (webmaster) 953 949
35) Superlatives (webmaster) 873 225
36) Adjectives (anonyme) 872 880
37) Simple present (bridg) 851 720
38) Spelled words N°1 (bridg) 848 287
39) Placement test beginners: Check your spelling (lucile83) 829 234
40) Introducing oneself (webmaster) 826 054
41) Adverbs of frequency (lucile83) 814 135
42) Family (bridg) 783 012
43) General test-End of high school / Beginning of university (webmaster) 780 914
44) Present simple (lucile83) 776 381
45) Frequency adverbs (webmaster) 776 376
46) Present BE + Ving (bridg) 762 791
47) Genitive (webmaster) 722 136
48) Family tree (anonyme) 717 905
49) Preterite: simple or continuous? (webmaster) 714 190
50) Passive form (lucile83) 709 504
51) Placement test (beginners) (lili73) 699 228
52) Past simple or present perfect (lucile83) 689 963
53) Future (webmaster) 674 798
54) 2 Preterites (webmaster) 659 730
55) Present perfect simple (bridg) 655 919
56) Preterite (webmaster) 617 283
57) List of 200 irregular verbs and audio (bridg) 614 207
58) Modals (webmaster) 611 652
59) Spelled words N°2 (bridg) 607 774
60) Height (webmaster) 605 426
61) Modals (webmaster) 601 781
62) Articles a / an / the (lucile83) 596 700
63) Plural forms (bridg) 575 873
64) Nationalities (webmaster) 573 096
65) Past continuous / Past simple (anonyme) 560 284
66) Irregular plurals (bridg) 552 216
67) Two presents: simple and continuous (webmaster) 548 237
68) Preterite (bridg) 547 458
69) Vocabulary: greeting people (here4u) 536 356
70) Superlatives (frapedur) 533 599
71) Give your opinion (bridg) 530 617
72) Adverbs of Frequency (bridg) 515 957
73) Present simple or continuous (lucile83) 506 117
74) Present perfect / preterite ? (anonyme) 504 995
75) Possessive case (anonyme) 479 464
76) Countries & nationalities (bridg) 471 961
77) 'The' or nothing? (webmaster) 470 333
78) Introducing oneself (easy) (webmaster) 469 962
79) Past tenses (bridg) 468 933
80) Passive voice (webmaster) 460 917
81) Present Simple vs. Past Simple (anonyme) 453 266
82) Questions : how to ask them (lucile83) 446 998
83) General Test II / End of high school / Beginning of universi (webmaster) 445 253
84) IN, ON, AT or TO? (webmaster) 443 747
85) Relative pronouns (webmaster) 442 742
86) Comparative of superiority (lucile83) 436 012
87) How to pronounce the final -ED? (past simple) (webmaster) 435 228
88) Relative clauses (webmaster) 422 195
89) Sounds: [h] (webmaster) 418 802
90) Comparative (anonyme) 411 313
91) A/an/Ø (bridg) 396 830
92) Future simple (lucile83) 394 556
93) This / That / These / Those (webmaster) 391 683
94) Past simple (anonyme) 391 204
95) Conditional (webmaster) 390 360
96) Passive voice (anonyme) 389 008
97) Comparing (webmaster) 387 363
98) Can / could/ may/ might (woodyrun) 378 252
99) Present perfect or past tense (anonyme) 375 022
100) Personal pronouns (anonyme) 370 877
101) Much, many, little and few (felin) 370 077
102) Some, any, no, enough, too/too much/too many (webmaster) 367 442
103) Preterite continuous (BE + -ING) (webmaster) 366 873
104) Genitive case (bridg) 366 537
105) Confusing words - Placement test (bridg) 364 140
106) Irregular verbs (webmaster) 362 566
107) Numbers from 1 to 10 (lucile83) 360 805
108) Past perfect simple, past perfect continuous (anonyme) 360 401
109) Present continuous or present simple (webmaster) 358 939
110) Present perfect or preterite? (anonyme) 354 030
111) Comparative Adjectives (bridg) 351 581
112) Simple Past : regular verbs (anonyme) 351 297
113) Who, Whom, Which, or Whose? (anonyme) 347 674
114) Past simple (video) (lucile83) 346 574
115) Past simple or past continuous (lucile83) 338 494
116) What time is it? (webmaster) 336 894
117) While / When (anonyme) 335 974
118) Modals (tinou) 335 768
119) Modal: may/might (lucile83) 333 433
120) Cardinal and ordinal numbers (anonyme) 327 872
121) Possessive adjectives and pronouns (woodyrun) 323 129
122) The superlative (anonyme) 322 147
123) How to talk about the weather (lili73) 320 800
124) Since and for (lucile83) 317 676
125) Flags (webmaster) 316 852
126) Irregular verbs (bridg) 315 187
127) Prepositions - in, on, at (anonyme) 313 620
128) Pronouns (woodyrun) 311 261
129) Tenses (anonyme) 310 413
130) Placement test 3 (webmaster) 309 857
131) Order of adjectives (webmaster) 305 638
132) Could/Couldn't (laure95) 305 247
133) Comparative (anonyme) 303 675
134) Adjectives and prepositions (lucile83) 303 658
135) Agreement Tags (webmaster) 303 395
136) Asking questions (webmaster) 302 320
137) Present perfect OR simple past? (bridg) 297 789
138) Questions in the past tense (lucile83) 296 581
139) Superlative Adjectives (bridg) 294 916
140) Uncountable nouns (webmaster) 294 706
141) Object pronouns (bridg) 293 362
142) Placement test 1 (lucile83) 291 868
143) Present simple (lucile83) 289 397
144) Prefer/rather (bridg) 288 477
145) Can/Must/Should (laure95) 287 953
146) Passive form (anonyme) 287 117
147) Must or Have to? (woodyrun) 285 959
148) Past perfect (lili73) 284 399
149) The/an/nothing (bridg) 284 340
150) To be (anonyme) 282 969
151) Vocabulary: asking and answering (here4u) 280 374
152) Can and can't (laure95) 278 670
153) Modal verbs (bridg) 276 762
154) Some / Any / no... (bridg) 269 561
155) Days of the week (bridg) 268 913
156) So / neither (anonyme) 263 807
157) Past simple (video) (lucile83) 263 141
158) Used to (bridg) 259 990
159) Past tense (anonyme) 258 683
160) Should / must (anonyme) 258 642
161) Vocabulary: on the phone (here4u) 258 638
162) Find out a quantity (webmaster) 258 290
163) Superlative + and adjective (lucile83) 256 325
164) Present continuous (chnawa) 256 235
165) Articles : a / an / the / Ø (anonyme) 253 642
166) Numbers 1/100 (anonyme) 252 777
167) Comparative and superlative (anonyme) 252 740
168) Modal can (video) (lucile83) 252 409
169) Relatives pronouns (who, which, that...) (anonyme) 247 719
170) Vocabulary: at the restaurant (here4u) 245 576
171) A few, a little, few, little (anonyme) 244 026
172) Would rather / would prefer to (anonyme) 243 801
173) Comparatives (anonyme) 242 220
174) Present continuous and the Going to form (anonyme) 242 006
175) Have something done (anonyme) 239 290
176) Should/ have to/ must (anonyme) 238 476
177) The past (webmaster) 237 491
178) Future continuous and future perfect. (felin) 237 081
179) Used to/would (woodyrun) 236 300
180) How to ask a question in English (bridg) 234 130
181) I wish, if only (felin) 233 683
182) Pluperfect (webmaster) 233 301
183) Countable or Uncountable? (webmaster) 232 552
184) Present simple or continuous (bridg) 230 734
185) Should / shouldn't (anonyme) 230 714
186) Some / any (younes91) 230 498
187) Adjectives - ing and ed (felin) 228 284
188) Hypothesis (webmaster) 227 412
189) Auxiliary BE (lucile83) 225 979
190) Articles a/an/the/0 (bridg) 225 798
191) Article The or nothing (anonyme) 225 389
192) Present perfect with Ever - never - (anonyme) 225 038
193) Present continuous OR Present simple? (bridg) 224 792
194) Must or mustn't (laure95) 223 610
195) Simple Preterite OR Preterite (BE+ing) (webmaster) 222 376
196) Present perfect (bridg) 218 966
197) To / in order to / so as to / so that (irish21) 218 954
198) What time is it ? (anonyme) 217 222
199) Indirect speech (bridg) 215 280
200) Comparison (komiks) 214 766
