tests by flori10 with the online test builder (57 tests)
Ranked by: number of candidates
1. Adjectives and adverbs (2366 candidates)
2. Instead of, unlike or whereas (1445 candidates)
3. Stop to do sth or stop doing sth (1339 candidates)
4. Past modals with deduction (1259 candidates)
5. Infinitive or ing-form after verbs of perception (1255 candidates)
6. Above or over (1081 candidates)
7. Make sb do sth or have something done (1007 candidates)
8. Word order: Verbs and objects go together (995 candidates)
9. Forget, remember, stop, be sorry + gerund or infinitive (833 candidates)
10. Had better or should (800 candidates)
11. Prepositions at, in, on (784 candidates)
12. Word order: Place before time (723 candidates)
13. Find the opposite adjective! (722 candidates)
14. Inverted conditionals (697 candidates)
15. Let alone (689 candidates)
16. All of which, whom, none of which, etc. (681 candidates)
17. Definitive, indefinite or no article (656 candidates)
18. Go on - regret to do sth - doing sth (641 candidates)
19. Dismissive, defiant, brazen (633 candidates)
20. Remember to do sth / Remember doing sth (613 candidates)