Another site:
AllTODAY'S STATSTop 200 most popular tests to learn English...
1) Placement test : grammar for beginners (lucile83) 150
2) A/AN (webmaster) 36
3) How long...?/ Since when...?: tenses. (here4u) 31
4) Present simple (webmaster) 25
5) Superlatives (webmaster) 24
6) Auxiliary BE (webmaster) 23
7) Test de niveau anglais (webmaster) 22
8) Short placement test (webmaster) 20
9) Family life (bridg) 19
10) Adjectives (lucile83) 17
11) Present continuous (webmaster) 16
12) (webmaster) 16
13) Adjectives: -ing or -ed (lili73) 16
14) Present simple (webmaster) 15
15) Adjectives (webmaster) 14
16) To be (bridg) 14
17) Present continuous (webmaster) 13
18) To be (bridg) 13
19) Spelled words N°1 (bridg) 13
20) Two presents: present continuous, present simple (webmaster) 12
21) Superlatives (frapedur) 12
22) Degree adverbs/restaurant (mariofrank) 12
23) THE/ A / AN / nothing (webmaster) 11
24) Superlative Adjectives (bridg) 11
25) Frequency adverbs (webmaster) 11
26) Writing a formal letter (webmaster) 11
27) Numbers (webmaster) 10
28) What time is it? (webmaster) 10
29) Comparatives / Superlatives (webmaster) 10
30) Comparative Adjectives (bridg) 10
31) Introducing oneself (webmaster) 10
32) The alphabet in English (webmaster) 10
33) Comparatives (webmaster) 9
34) Present perfect OR simple past? (bridg) 9
35) Present perfect simple (bridg) 9
36) (webmaster) 9
37) IN, ON, AT or TO? (webmaster) 9
38) Family (bridg) 9
39) Nationalities (webmaster) 9
40) Numbers from 1 to 10 (lucile83) 8
41) Adverbs of frequency (lucile83) 8
42) (webmaster) 8
43) Introducing oneself (easy) (webmaster) 8
44) Passive form (lucile83) 8
45) Placement test (beginners) (lili73) 8
46) Direct or indirect interrogatives: patterns. (here4u) 8
47) Flags (webmaster) 7
48) Present perfect (webmaster) 7
49) Spelled words N°2 (bridg) 7
50) (webmaster) 7
51) Adverbs (hidalgo) 7
52) Present simple or continuous (lucile83) 7
53) Article The and geography (lili73) 7
54) Questions : how to ask them (lucile83) 7
55) Vocabulary - Placement test (bridg) 7
56) Present perfect simple (webmaster) 6
57) Genitive (webmaster) 6
58) Preterite (webmaster) 6
59) Numbers (webmaster) 6
60) Present BE + Ving (bridg) 6
61) 'The' or nothing? (webmaster) 6
62) (webmaster) 6
63) Conjunctions (bridg) 6
64) What time is it? (webmaster) 6
65) Countries & nationalities (bridg) 6
66) Adverbs of Frequency (bridg) 6
67) (bridg) 6
68) Pronouns (woodyrun) 6
69) Placement test beginners: Check your spelling (lucile83) 6
70) Present simple (komiks) 6
71) Numbers > 100 (webmaster) 5
72) CAN / MUST (webmaster) 5
73) The/an/nothing (bridg) 5
74) Plural (webmaster) 5
75) What time is it? (webmaster) 5
76) Asking questions (webmaster) 5
77) Simple present (bridg) 5
78) Comparing (webmaster) 5
79) Relative pronouns (webmaster) 5
80) Present continuous (chnawa) 5
81) Placement test 3 (webmaster) 5
82) BE (present/past) (missd) 5
83) Future (webmaster) 4
84) Modals (webmaster) 4
85) (webmaster) 4
86) Past tenses (bridg) 4
87) Plural forms (bridg) 4
88) Dialogue : Postcard from Florida (bridg) 4
89) Countable nouns with a/an and some (lucile83) 4
90) (webmaster) 4
91) Sounds: [h] (webmaster) 4
92) American /British English (lili73) 4
93) List of 200 irregular verbs and audio (bridg) 4
94) Future after when (lili73) 4
95) Contractions (lili73) 4
96) Present simple (lucile83) 4
97) Past simple or present perfect (lucile83) 4
98) Comparison (komiks) 4
99) Preterite (webmaster) 3
100) Feminine forms of nouns (webmaster) 3
101) A/an/Ø (bridg) 3
102) Preterite (bridg) 3
103) Preterite (webmaster) 3
104) Locating objects in a flat (webmaster) 3
105) What time is it ? (webmaster) 3
106) Irregular plurals (bridg) 3
107) Order of adjectives (webmaster) 3
108) Tenses (bridg) 3
109) Indirect speech (bridg) 3
110) Irregular verbs (bridg) 3
111) Dialogue : Let's go shopping (bridg) 3
112) Present continuous or present simple (webmaster) 3
113) (webmaster) 3
114) (webmaster) 3
115) British English/American English (webmaster) 3
116) Passive voice (webmaster) 3
117) How to talk about the weather (lili73) 3
118) Past perfect (lili73) 3
119) Do , does , did (jagienka) 3
120) Past simple (video) (lucile83) 3
121) Questions tags (eos17) 3
122) All about DNA (val92) 3
123) AT - ON - IN Time clauses (bernard02) 3
124) At the airport: (carlabice47) 3
125) Relatives (here4u) 3
126) Quantifiers (some, any, no) (here4u) 3
127) Adjective/adverb (mariofrank) 3
128) Small creatures (bribri83) 3
129) Two presents: simple and continuous (webmaster) 2
130) Irregular Verbs (I) (webmaster) 2
131) Height (webmaster) 2
132) Pluperfect (webmaster) 2
133) General test-End of high school / Beginning of university (webmaster) 2
134) General Test II / End of high school / Beginning of universi (webmaster) 2
135) Famous quotes (bridg) 2
136) Countryside (The) (lucile83) 2
137) 2 Preterites (webmaster) 2
138) (webmaster) 2
139) Questions (webmaster) 2
140) Passive voice (webmaster) 2
141) Some / Any / no... (bridg) 2
142) (bridg) 2
143) Halloween (webmaster) 2
144) Adjectives - ing and ed (felin) 2
145) What's the weather like? (bridg) 2
146) Genitive case (bridg) 2
147) Postcard : Thanks for this journey. (bridg) 2
148) THE or NOTHING? (bridg) 2
149) Food and drink (bridg) 2
150) Modals (webmaster) 2
151) Dialogue : How are you enjoying your stay? (bridg) 2
152) (woodyrun) 2
153) Imperative (bridg) 2
154) Personal pronouns subjects (bridg) 2
155) Spelled words N°6 - animals (bridg) 2
156) Relative clauses (webmaster) 2
157) Present Simple (anuesther) 2
158) (webmaster) 2
159) Phrasal verbs To look (chrislondon) 2
160) Have and activities (lucile83) 2
161) Both, the two, neither, none, all (lili73) 2
162) Irregular verbs (lili73) 2
163) Gone or been? (bridg) 2
164) Adjectives and prepositions (bridg) 2
165) Present perfect (bridg) 2
166) (bridg) 2
167) Simple past tense (bridg) 2
168) Placement test 1 (lucile83) 2
169) Place of adverbs (woodyrun) 2
170) Past simple or past continuous (lucile83) 2
171) Bill, tip, fare, fine, fee (lili73) 2
172) Future simple (lucile83) 2
173) Superlative + and adjective (lucile83) 2
174) At the airport (matrixhamdi) 2
175) Describing a face (bridg) 2
176) For (lili73) 2
177) When / as soon as (laure95) 2
178) Passive voice in past tense (laure95) 2
179) Auld Lang Syne & New Year (lili73) 2
180) During, for or since (laure95) 2
181) Compound adjectives (here4u) 2
182) Make / Get / Let / Have (greg100) 2
183) To / in order to / so as to / so that (irish21) 2
184) Can/Must/Should (laure95) 2
185) Could/Couldn't (laure95) 2
186) Choice of verbs (lucile83) 2
187) (vero7000) 2
188) Placement test : Action verbs (bridg) 2
189) Not everyone has ... (here4u) 2
190) Choose the right tenses of the verbs (lucile83) 2
191) TO + verb base or TO + V + ing (here4u) 2
192) Do/does/did: affirmative, interrogative and negative forms (here4u) 2
193) Link words: expressing TIME (here4u) 2
194) Too-Also-As well (mah) 2
195) (The) other/ (the) others (here4u) 2
196) Conditional 3 - basis (necroboynonoss) 2
197) At school: teaching equipment (chocolatcitron) 2
198) Used to, be used to, get used to (eos17) 2
199) Antonyms (eos17) 2
200) Prepositions ,at, in, on, to, from, of, by (ash13) 2
