All tests by jandark with the online test builder (7 tests)
1. Pretérito perfecto compuesto (3126 candidates) 
2. Imperfect or Present tense (2362 candidates)
3. Ser or Estar (1552 candidates)
4. También / tampoco (4523 candidates)
5. Comparison words: más ,menos ,mayor ,menor ,mejor, peor (11257 candidates) 
6. Since, for, while, during, ago (3261 candidates) 
7. For, since, while, during (7890 candidates)
1.
Pretérito perfecto compuesto (3126 candidates) 2.
Imperfect or Present tense (2362 candidates) 3.
Ser or Estar (1552 candidates) 4.
También / tampoco (4523 candidates) 5.
Comparison words: más ,menos ,mayor ,menor ,mejor, peor (11257 candidates) 6.
Since, for, while, during, ago (3261 candidates) 7.
For, since, while, during (7890 candidates) 