All tests by jandark with the online test builder (7 tests)
1. Pretérito perfecto compuesto (3515 candidates) 
2. Imperfect or Present tense (2548 candidates)
3. Ser or Estar (1563 candidates)
4. También / tampoco (4862 candidates)
5. Comparison words: más ,menos ,mayor ,menor ,mejor, peor (12179 candidates) 
6. Since, for, while, during, ago (3349 candidates) 
7. For, since, while, during (8071 candidates)
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Pretérito perfecto compuesto (3515 candidates) 2.
Imperfect or Present tense (2548 candidates) 3.
Ser or Estar (1563 candidates) 4.
También / tampoco (4862 candidates) 5.
Comparison words: más ,menos ,mayor ,menor ,mejor, peor (12179 candidates) 6.
Since, for, while, during, ago (3349 candidates) 7.
For, since, while, during (8071 candidates) 