All tests by jandark with the online test builder (7 tests)
1. Pretérito perfecto compuesto (3461 candidates) 
2. Imperfect or Present tense (2527 candidates)
3. Ser or Estar (1554 candidates)
4. También / tampoco (4799 candidates)
5. Comparison words: más ,menos ,mayor ,menor ,mejor, peor (12011 candidates) 
6. Since, for, while, during, ago (3333 candidates) 
7. For, since, while, during (8052 candidates)
1.
Pretérito perfecto compuesto (3461 candidates) 2.
Imperfect or Present tense (2527 candidates) 3.
Ser or Estar (1554 candidates) 4.
También / tampoco (4799 candidates) 5.
Comparison words: más ,menos ,mayor ,menor ,mejor, peor (12011 candidates) 6.
Since, for, while, during, ago (3333 candidates) 7.
For, since, while, during (8052 candidates) 