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

21. 'You and me'? or 'You and I'? (5403 candidates)
22. How long...?/ Since when...?: tenses. (6034 candidates)
23. 'Used to' or 'would'? (5637 candidates)
24. 'Than', 'as' or '(that)? (7695 candidates)
25. Vocabulary: lose, waste: in many ways... (3452 candidates)
26. Vocabulary: verbs + ing or the infinitive (4588 candidates)
27. Order of adjectives. (3690 candidates)
28. Possession - vocabulary (3667 candidates)
29. Focus sur SHOULD/ OUGHT TO: necessity and duty. (3940 candidates)
30. Resultatives (3058 candidates)
31. Confusion : to make up for something? to catch up with someb (29 candidates) [Being reviewed]
32. Focus on MUST: an ambiguous modal auxiliary. (3958 candidates)
33. Focus on MAY: Possibility and permission. (3873 candidates)
34. Focus on CAN: incapacity and impossibility. (4520 candidates)
35. Recycling waste... - Vocabulary (2932 candidates)
36. Likely/unlikely - Willing/ unwilling (161 candidates) [Being reviewed]
37. 'Whose' and idiomatic possessive forms... (4778 candidates)
38. Preference: I'd rather go.../ I'd rather you went (5243 candidates)
39. Verbs in the -ing form, or not? (5718 candidates)
40. Verbs with two object complements (3242 candidates)