All tests by jandark with the online test builder (7 tests)
1. Pretérito perfecto compuesto (3317 candidates) 
2. Imperfect or Present tense (2397 candidates)
3. Ser or Estar (1552 candidates)
4. También / tampoco (4621 candidates)
5. Comparison words: más ,menos ,mayor ,menor ,mejor, peor (11540 candidates) 
6. Since, for, while, during, ago (3282 candidates) 
7. For, since, while, during (7958 candidates)
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Pretérito perfecto compuesto (3317 candidates) 2.
Imperfect or Present tense (2397 candidates) 3.
Ser or Estar (1552 candidates) 4.
También / tampoco (4621 candidates) 5.
Comparison words: más ,menos ,mayor ,menor ,mejor, peor (11540 candidates) 6.
Since, for, while, during, ago (3282 candidates) 7.
For, since, while, during (7958 candidates) 