tests by here4u with the online test builder (683 tests)

21. Confusion : to make up for something? to catch up with someb (17 candidates) [Being reviewed]
22. Focus on MUST: an ambiguous modal auxiliary. (3753 candidates)
23. Focus on MAY: Possibility and permission. (3736 candidates)
24. Focus on CAN: incapacity and impossibility. (4315 candidates)
25. Recycling waste... - Vocabulary (2844 candidates)
26. Likely/unlikely - Willing/ unwilling (70 candidates) [Being reviewed]
27. 'Whose' and idiomatic possessive forms... (4269 candidates)
28. Preference: I'd rather go.../ I'd rather you went (4740 candidates)
29. Verbs in the -ing form, or not? (5613 candidates)
30. Verbs with two object complements (3170 candidates)
31. Vocabulary: some time/ sometime/ sometimes (4470 candidates)
32. Doubling the final consonant, or not? (5160 candidates)
33. Vocabulary: steal or rob? remember or remind? (4854 candidates)
34. Civilisation: Thanksgiving and Black Friday (2871 candidates)
35. Idioms: the weather (2735 candidates)
36. Concession (4987 candidates)
37. Idioms: men and women (305 candidates)
38. Reduced forms (3970 candidates)
39. Modal auxiliaries in the past. (4951 candidates)
40. To see and to hear + ing/ bare infinitive (6413 candidates)