All tests by jandark with the online test builder (7 tests)
1. Pretérito perfecto compuesto (3389 candidates) 
2. Imperfect or Present tense (2442 candidates)
3. Ser or Estar (1554 candidates)
4. También / tampoco (4701 candidates)
5. Comparison words: más ,menos ,mayor ,menor ,mejor, peor (11830 candidates) 
6. Since, for, while, during, ago (3313 candidates) 
7. For, since, while, during (8014 candidates)
1.
Pretérito perfecto compuesto (3389 candidates) 2.
Imperfect or Present tense (2442 candidates) 3.
Ser or Estar (1554 candidates) 4.
También / tampoco (4701 candidates) 5.
Comparison words: más ,menos ,mayor ,menor ,mejor, peor (11830 candidates) 6.
Since, for, while, during, ago (3313 candidates) 7.
For, since, while, during (8014 candidates) 