tests by arpeggia with the online test builder (153 tests)
Ranked by: number of candidates
1. Der - die - das (18406 candidates)
2. Perfekt: 'haben' or 'sein'? (11764 candidates)
3. Modal verbs (11643 candidates)
4. Adjective (11615 candidates)
5. Prepositions + dative or accusative case (10741 candidates)
6. Denn/weil (9713 candidates)
7. Comparisons: als/wie (8902 candidates)
8. Indirect questions (8142 candidates)
9. Times of the day (6122 candidates)
10. Seit/bis (5769 candidates)
11. Hätte or wäre? (5571 candidates)
12. Accusative or dative (5265 candidates)
13. Wer - wen - wem - wessen (4318 candidates)
14. Personal pronouns (4264 candidates)
15. Accusative / Dative (3916 candidates)
16. Das und dass (3911 candidates)
17. Verbs + prepositions (3287 candidates)
18. Als / Wenn (3260 candidates)
19. Demonstrative pronouns (3188 candidates)
20. Prepositions + accusative/dative (3129 candidates)