tests by eos17 with the online test builder (394 tests)
Ranked by: number of candidates
1. False friends (31189 candidates)
2. Present simple or continuous (28941 candidates)
3. Open questions (24077 candidates)
4. Past simple (20512 candidates)
5. At/In/To (19053 candidates)
6. Comparison (14954 candidates)
7. Verbs and tenses (14789 candidates)
8. Expression of cause (13262 candidates)
9. False friends (12750 candidates)
10. Adjectives and prepositions (11557 candidates)
11. Used to, be used to, get used to (11202 candidates)
12. Confusion and words (11131 candidates)
13. Coordinating conjunctions (11027 candidates)
14. Infinitive or Gerund? (10998 candidates)
15. Reported speech (10933 candidates)
16. Compound adjectives (10780 candidates)
17. Suffixes in derivation (10105 candidates)
18. Adjective and preposition (9676 candidates)
19. Still/always (9525 candidates)
20. Adjectives and prepositions (9334 candidates)