All tests by jandark with the online test builder (7 tests)
1. Pretérito perfecto compuesto (2859 candidates) 
2. Imperfect or Present tense (2270 candidates)
3. Ser or Estar (1552 candidates)
4. También / tampoco (4170 candidates)
5. Comparison words: más ,menos ,mayor ,menor ,mejor, peor (10777 candidates) 
6. Since, for, while, during, ago (3202 candidates) 
7. For, since, while, during (7735 candidates)
1.
Pretérito perfecto compuesto (2859 candidates) 2.
Imperfect or Present tense (2270 candidates) 3.
Ser or Estar (1552 candidates) 4.
También / tampoco (4170 candidates) 5.
Comparison words: más ,menos ,mayor ,menor ,mejor, peor (10777 candidates) 6.
Since, for, while, during, ago (3202 candidates) 7.
For, since, while, during (7735 candidates) 