tests by tati71 with the online test builder (174 tests)
Ranked by: number of candidates
1. Declension : Epithet adjectives with definite articles (34723 candidates)
2. Imperative (28664 candidates)
3. Infinitive (ohne zu, um zu, anstatt zu) (26979 candidates)
4. Aus, von - choose (20260 candidates)
5. Declension : Epithet adjectives (20094 candidates)
6. Passive voice (18599 candidates)
7. Questions (wie, wo, was...) (18387 candidates)
8. Adjectives (17286 candidates)
9. In / nach (16408 candidates)
10. Trotz / wegen (15399 candidates)
11. Job interview (15195 candidates)
12. Simple past/Imperfekt: Modals (14774 candidates)
13. Conjunctions : dass / weil (14529 candidates)
14. Pluperfect (11952 candidates)
15. Reflexive pronouns (10846 candidates)
16. Present : Dürfen/Können (10257 candidates)
17. Comparisons (10218 candidates)
18. Prepositions : bei / zu (10194 candidates)
19. Conjunctions (9017 candidates)
20. Personal pronouns (8926 candidates)