tests by here4u with the online test builder (690 tests)

21. Vocabulary: lose, waste: in many ways... (3412 candidates)
22. Vocabulary: verbs + ing or the infinitive (4555 candidates)
23. Order of adjectives. (3649 candidates)
24. Possession - vocabulary (3643 candidates)
25. Focus sur SHOULD/ OUGHT TO: necessity and duty. (3837 candidates)
26. Resultatives (2882 candidates)
27. Confusion : to make up for something? to catch up with someb (28 candidates) [Being reviewed]
28. Focus on MUST: an ambiguous modal auxiliary. (3926 candidates)
29. Focus on MAY: Possibility and permission. (3859 candidates)
30. Focus on CAN: incapacity and impossibility. (4468 candidates)
31. Recycling waste... - Vocabulary (2913 candidates)
32. Likely/unlikely - Willing/ unwilling (122 candidates) [Being reviewed]
33. 'Whose' and idiomatic possessive forms... (4603 candidates)
34. Preference: I'd rather go.../ I'd rather you went (5179 candidates)
35. Verbs in the -ing form, or not? (5669 candidates)
36. Verbs with two object complements (3225 candidates)
37. Vocabulary: some time/ sometime/ sometimes (4538 candidates)
38. Doubling the final consonant, or not? (5237 candidates)
39. Vocabulary: steal or rob? remember or remind? (4897 candidates)
40. Civilisation: Thanksgiving and Black Friday (2924 candidates)