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

21. Verbs in the -ing form, or not? (5542 candidates)
22. Verbs with two object complements (3130 candidates)
23. Vocabulary: some time/ sometime/ sometimes (4386 candidates)
24. Doubling the final consonant, or not? (5056 candidates)
25. Vocabulary: steal or rob? remember or remind? (4774 candidates)
26. Civilisation: Thanksgiving and Black Friday (2807 candidates)
27. Idioms: the weather (2708 candidates)
28. Concession (4833 candidates)
29. Idioms: men and women (297 candidates)
30. Reduced forms (3909 candidates)
31. Modal auxiliaries in the past. (4674 candidates)
32. To see and to hear + ing/ bare infinitive (6325 candidates)
33. Word Stress (2) (2193 candidates)
34. Word Stress (1) (2713 candidates)
35. Pronunciation of the final sound -ED (3897 candidates)
36. A few difficulties with pronunciation (3288 candidates)
37. Vocabulary: doing things... (4146 candidates)
38. Vocabulary: Taking a holiday (4308 candidates)
39. Can/ could/ can't and equivalents (1036 candidates)
40. By? By the time? Until? (6034 candidates)