tests by eos17 with the online test builder (394 tests)
Ranked by: number of candidates
1. False friends (31206 candidates)
2. Present simple or continuous (28966 candidates)
3. Open questions (24151 candidates)
4. Past simple (20560 candidates)
5. At/In/To (19058 candidates)
6. Comparison (14970 candidates)
7. Verbs and tenses (14799 candidates)
8. Expression of cause (13274 candidates)
9. False friends (12760 candidates)
10. Adjectives and prepositions (11573 candidates)
11. Used to, be used to, get used to (11392 candidates)
12. Confusion and words (11175 candidates)
13. Coordinating conjunctions (11035 candidates)
14. Infinitive or Gerund? (10998 candidates)
15. Reported speech (10935 candidates)
16. Compound adjectives (10780 candidates)
17. Suffixes in derivation (10108 candidates)
18. Adjective and preposition (9680 candidates)
19. Still/always (9530 candidates)
20. Adjectives and prepositions (9335 candidates)