tests by here4u with the online test builder (669 tests)

21. Focus on MAY: Possibility and permission. (3713 candidates)
22. Focus on CAN: incapacity and impossibility. (4290 candidates)
23. Recycling waste... - Vocabulary (2835 candidates)
24. Likely/unlikely - Willing/ unwilling (69 candidates) [Being reviewed]
25. 'Whose' and idiomatic possessive forms... (4233 candidates)
26. Preference: I'd rather go.../ I'd rather you went (4735 candidates)
27. Verbs in the -ing form, or not? (5601 candidates)
28. Verbs with two object complements (3167 candidates)
29. Vocabulary: some time/ sometime/ sometimes (4456 candidates)
30. Doubling the final consonant, or not? (5151 candidates)
31. Vocabulary: steal or rob? remember or remind? (4839 candidates)
32. Civilisation: Thanksgiving and Black Friday (2865 candidates)
33. Idioms: the weather (2729 candidates)
34. Concession (4963 candidates)
35. Idioms: men and women (301 candidates)
36. Reduced forms (3962 candidates)
37. Modal auxiliaries in the past. (4922 candidates)
38. To see and to hear + ing/ bare infinitive (6391 candidates)
39. Word Stress (2) (2365 candidates)
40. Word Stress (1) (2908 candidates)