tests by arpeggia with the online test builder (153 tests)
Ranked by: number of candidates
1. Der - die - das (18426 candidates)
2. Perfekt: 'haben' or 'sein'? (11805 candidates)
3. Adjective (11713 candidates)
4. Modal verbs (11678 candidates)
5. Prepositions + dative or accusative case (10770 candidates)
6. Denn/weil (9813 candidates)
7. Comparisons: als/wie (8928 candidates)
8. Indirect questions (8167 candidates)
9. Times of the day (6133 candidates)
10. Seit/bis (5777 candidates)
11. Hätte or wäre? (5576 candidates)
12. Accusative or dative (5265 candidates)
13. Wer - wen - wem - wessen (4329 candidates)
14. Personal pronouns (4268 candidates)
15. Das und dass (3987 candidates)
16. Accusative / Dative (3918 candidates)
17. Verbs + prepositions (3310 candidates)
18. Als / Wenn (3262 candidates)
19. Demonstrative pronouns (3192 candidates)
20. Prepositions + accusative/dative (3137 candidates)