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

41. Concession (5094 candidates)
42. Idioms: men and women (312 candidates)
43. Reduced forms (4024 candidates)
44. Modal auxiliaries in the past. (5278 candidates)
45. To see and to hear + ing/ bare infinitive (6486 candidates)
46. Word Stress (2) (2451 candidates)
47. Word Stress (1) (3048 candidates)
48. Pronunciation of the final sound -ED (4373 candidates)
49. A few difficulties with pronunciation (3455 candidates)
50. Vocabulary: doing things... (4199 candidates)
51. Vocabulary: Taking a holiday (4366 candidates)
52. Can/ could/ can't and equivalents (1434 candidates)
53. By? By the time? Until? (6200 candidates)
54. Made of? from? with? or out of? (6220 candidates)
55. Standard or casual registers? (3149 candidates)
56. Conditions (2444 candidates)
57. Vocabulary: belonging and possessing (459 candidates)
58. Subject-verb inversions (4101 candidates)
59. Word order: no subject - verb inversion (659 candidates)
60. To be to? or To have to? (913 candidates)