tests by arpeggia with the online test builder (153 tests)
Ranked by: number of candidates
1. Der - die - das (18386 candidates)
2. Perfekt: 'haben' or 'sein'? (11757 candidates)
3. Modal verbs (11617 candidates)
4. Adjective (11558 candidates)
5. Prepositions + dative or accusative case (10722 candidates)
6. Denn/weil (9697 candidates)
7. Comparisons: als/wie (8846 candidates)
8. Indirect questions (8131 candidates)
9. Times of the day (6120 candidates)
10. Seit/bis (5765 candidates)
11. Hätte or wäre? (5568 candidates)
12. Accusative or dative (5264 candidates)
13. Wer - wen - wem - wessen (4307 candidates)
14. Personal pronouns (4264 candidates)
15. Accusative / Dative (3916 candidates)
16. Das und dass (3896 candidates)
17. Verbs + prepositions (3276 candidates)
18. Als / Wenn (3258 candidates)
19. Demonstrative pronouns (3187 candidates)
20. Prepositions + accusative/dative (3129 candidates)