tests by here4u with the online test builder (627 tests)

21. 'Used to' or 'would'? (5482 candidates)
22. 'Than', 'as' or '(that)? (7611 candidates)
23. Vocabulary: lose, waste: in many ways... (3443 candidates)
24. Vocabulary: verbs + ing or the infinitive (4582 candidates)
25. Order of adjectives. (3676 candidates)
26. Possession - vocabulary (3658 candidates)
27. Focus sur SHOULD/ OUGHT TO: necessity and duty. (3908 candidates)
28. Resultatives (2948 candidates)
29. Confusion : to make up for something? to catch up with someb (29 candidates) [Being reviewed]
30. Focus on MUST: an ambiguous modal auxiliary. (3945 candidates)
31. Focus on MAY: Possibility and permission. (3869 candidates)
32. Focus on CAN: incapacity and impossibility. (4487 candidates)
33. Recycling waste... - Vocabulary (2922 candidates)
34. Likely/unlikely - Willing/ unwilling (136 candidates) [Being reviewed]
35. 'Whose' and idiomatic possessive forms... (4704 candidates)
36. Preference: I'd rather go.../ I'd rather you went (5224 candidates)
37. Verbs in the -ing form, or not? (5707 candidates)
38. Verbs with two object complements (3241 candidates)
39. Vocabulary: some time/ sometime/ sometimes (4547 candidates)
40. Doubling the final consonant, or not? (5252 candidates)