BE, HAVE, DO, DID, WAS...
Contractions

N°	Title	Difficulty	Author	Candidates	Average	Your mark
Recommended:
1	Auxiliary BE.		webmaster	1106550	91.5/100	Club
2	To be		bridg	272001	93.5/100	Club
3	Auxiliary BE		anonyme	66215	79.5/100	Club
4	Apostrophe + s (video)		lucile83	43032	76.5/100	Club
5	To be - Present		bridg	24299	84.5/100	Club
6	To have and activities		lucile83	22590	69/100	Club
7	Auxiliary Auxiliaires Be- have etc...		anonyme	17227	36.5/100	Club
8	Auxiliary do		lili73	17206	51/100	Club
9	Be or do		bridg	10799	71.5/100	Club
10	TLE : To have		lucile83	5200	88.5/100	Club
11	To be in the simple past tense		lucile83	2961	37.5/100	Club
12	Contractions		lili73	2093	57.5/100	Club
13	Contractions		bridg	1322	34.5/100	Club
Other interesting lessons and exercises:
1	To be and to have got		anonyme	73721	66/100	Club
2	Be		anonyme	41008	91/100	Club
3	Auxiliaries and conjugations		anonyme	34195	53.5/100	Club
4	Do / Make / Take		anonyme	31534	49.5/100	Club
5	BE		anonyme	31398	83.5/100	Club
6	'Have' ou 'Be'		juan59	20945	72/100	Club
7	Have and be		anonyme	20166	69.5/100	Club
8	's = is or has ?		anonyme	19358	72.5/100	Club
9	Choose the right verb		anonyme	16891	77/100	Club
10	Is/are/do/does		anonyme	15702	63/100	Club
11	To be		anonyme	14304	84.5/100	Club
12	Have / has		anonyme	14136	83/100	Club
13	Do - does or did?		anonyme	13466	72/100	Club
14	Be / have got		anonyme	13399	68.5/100	Club
15	To be		anonyme	12177	82.5/100	Club
16	Verbs: to be, to have & to go		anonyme	10681	59.5/100	Club
17	Be / have / do		bridg	10082	60/100	Club
18	Be/Do/Did		juan59	9645	63.5/100	Club
19	To be		anonyme	9506	88.5/100	Club
20	Be / have got		anonyme	8888	74/100	Club
21	Be or have got		anonyme	8719	68/100	Club
22	To be		anonyme	8583	85/100	Club
23	To be		anonyme	8392	78.5/100	Club
24	Auxiliary do		anonyme	8362	71.5/100	Club
25	Say it right		anonyme	8321	88/100	Club
26	Be / have / do		anonyme	7968	67/100	Club
27	Be / have got		anonyme	7602	68/100	Club
28	'do', 'have' or 'be' ?		anonyme	7572	68/100	Club
29	Do , does , did		jagienka	7143	66.5/100	Club
30	Be in present tense		anonyme	7123	80.5/100	Club
31	Do, does, don't or doesn't		anonyme	6594	58/100	Club
32	Auxiliary		anonyme	6543	75/100	Club
33	Auxiliary do		patou33	6400	70/100	Club
34	Be or have got		anonyme	6375	73.5/100	Club
35	Be in preterite tense		anonyme	6252	61.5/100	Club
36	Did, was ,were ?		anonyme	6063	68.5/100	Club
37	Do - Be - Have		anonyme	6025	50.5/100	Club
38	Be & have		anonyme	5840	43.5/100	Club
39	Be, have, do		anonyme	5679	58.5/100	Club
40	Be or have		anonyme	5656	75.5/100	Club
41	To be / to have		anonyme	5620	64/100	Club
42	Be or have?		anonyme	5459	63/100	Club
43	Be or have got		anonyme	5403	70.5/100	Club
44	Be and have got		anonyme	5356	70/100	Club
45	Did / Was / Were		anonyme	5186	65.5/100	Club
46	To have or to be		anonyme	5126	70.5/100	Club
47	To be		anonyme	5029	84.5/100	Club
48	Auxiliaries		anonyme	4704	42/100	Club
49	Be or Have?		brette14	4698	69.5/100	Club
50	Auxiliary		anonyme	4405	64.5/100	Club
51	Be / have got		anonyme	4161	72/100	Club
52			anonyme	4054	90/100	Club
53	Auxiliary do		anonyme	4033	57/100	Club
54	Auxiliaries		anonyme	3867	55.5/100	Club
55	Have, Had, Is, Was		anonyme	3853	59.5/100	Club
56	Be /have		anonyme	3782	54.5/100	Club
57	Auxiliary Do		anonyme	3575	72.5/100	Club
58	Past tense of to be		anonyme	3473	68.5/100	Club
59	Structure of the sentence		matrix_hamdi	3463	68.5/100	Club
60	Be/ have		anonyme	3424	52.5/100	Club
61	Is, has or genitive		anonyme	3149	72.5/100	Club
62	Auxiliaries		anonyme	3140	73.5/100	Club
63	Will / would		fouine18	3063	30/100	Club
64	Is or has ?		juan59	3057	77/100	Club
65	Auxiliary		anonyme	2988	62/100	Club
66	Be / Have / Do		lili73	2823	54.5/100	Club
67	Do,does,did		anonyme	2576	70.5/100	Club
68	To be or to have got ?		anonyme	2554	82.5/100	Club
69	Present tense of to be		anonyme	2504	65/100	Club
70	Contraction of to be		anonyme	2480	68.5/100	Club
71	's = has,is or genitive?		hidalgo	2479	65.5/100	Club
72	Be et autres auxiliaires		anonyme	2441	77.5/100	Club
73	Present simple		anonyme	2347	71.5/100	Club
74	Do in the present simple		anonyme	2274	81/100	Club
75	To be or to have		anonyme	2255	48.5/100	Club
76	Be, have and do		anonyme	2216	64.5/100	Club
77	To be and to have		anonyme	2110	50/100	Club
78	Auxiliaries		anonyme	2088	42.5/100	Club
79	Short form for : 's		bridg	2081	79.5/100	Club
80	Past tense		anonyme	2077	60.5/100	Club
81	Doesn't / don't / didn't		lili73	2069	67/100	Club
82	Auxiliaries		anonyme	2000	65.5/100	Club
83	IS or HAS?		anonyme	1918	77/100	Club
84	Auxiliaries and verbs		hidalgo	1874	66/100	Club
85	Auxiliaries		anonyme	1839	53/100	Club
86	Auxiliaries		anonyme	1823	55/100	Club
87	Verbs		anonyme	1756	84.5/100	Club
88	To be/to have		anonyme	1692	70/100	Club
89	Be,Have,Do		anonyme	1672	68.5/100	Club
90	TLE : To have		lucile83	1669	78/100	Club
91	Be / do		anonyme	1581	62/100	Club
92	Contractions / What are contractions?		anonyme	1558	61/100	Club
93	Do/don't and sentences		anonyme	1515	75.5/100	Club
94	Past tense and auxiliary verb		anonyme	1500	70/100	Club
95	Auxiliaries		hidalgo	1389	56.5/100	Club
96	Emphatic use of do		bridg	1359	47/100	Club
97	Modal verbs and auxiliaries		anonyme	1340	55/100	Club
98	Use was(n't) , did(n't) or were(n't)		anonyme	1312	62.5/100	Club
99	Use 'do'		anonyme	1295	62/100	Club
100	Do (auxiliary)		lili73	1273	59/100	Club
101	To be		nanette33	1195	43.5/100	Club
102	Disorder and auxiliary		anonyme	1195	86/100	Club
103	Do in short answers		anonyme	1060	55/100	Club
104	Avoid repetitions		lucile83	1006	78/100	Club
105	Auxiliaries		anonyme	979	60/100	Club
106	Verbs		anonyme	972	76/100	Club
107	Using do		lucile83	951	38/100	Club
108	Contractions and verbs		anonyme	893	61.5/100	Club
109	Verbs and actions		anonyme	848	84.5/100	Club
110	To do		anonyme	827	58.5/100	Club
111	Emphatic form		belleopale	796	25.5/100	Club
112	Use contractions		woodyrun	703	60.5/100	Club
113	Contractions : 'd/'s		anonyme	665	64/100	Club
114	Contracted forms		lili73	600	72.5/100	Club
115	Contractions		anonyme	414	50.5/100	Club