tests by here4u with the online test builder (650 tests)

21. Focus sur SHOULD/ OUGHT TO: necessity and duty. (3475 candidates)
22. Resultatives (2712 candidates)
23. Confusion : to make up for something? to catch up with someb (23 candidates) [Being reviewed]
24. Focus on MUST: an ambiguous modal auxiliary. (3816 candidates)
25. Focus on MAY: Possibility and permission. (3791 candidates)
26. Focus on CAN: incapacity and impossibility. (4379 candidates)
27. Recycling waste... - Vocabulary (2874 candidates)
28. Likely/unlikely - Willing/ unwilling (107 candidates) [Being reviewed]
29. 'Whose' and idiomatic possessive forms... (4382 candidates)
30. Preference: I'd rather go.../ I'd rather you went (5034 candidates)
31. Verbs in the -ing form, or not? (5629 candidates)
32. Verbs with two object complements (3186 candidates)
33. Vocabulary: some time/ sometime/ sometimes (4504 candidates)
34. Doubling the final consonant, or not? (5189 candidates)
35. Vocabulary: steal or rob? remember or remind? (4873 candidates)
36. Civilisation: Thanksgiving and Black Friday (2910 candidates)
37. Idioms: the weather (2765 candidates)
38. Concession (5045 candidates)
39. Idioms: men and women (310 candidates)
40. Reduced forms (3986 candidates)