tests by tulipe12 with the online test builder
(7 tests)
Ranked by: number of candidates
1. Present simple (80346 candidates) 
2. Present continuous (74974 candidates)
3. Comparative and superlative (65360 candidates)
4. Colours and pictures (31377 candidates)
5. So - Neither (8245 candidates)
6. Express disagreement (4891 candidates)
7. Present simple or continuous (2863 candidates)
(7 tests) Ranked by: number of candidates
1.
Present simple (80346 candidates) 2.
Present continuous (74974 candidates) 3.
Comparative and superlative (65360 candidates) 4.
Colours and pictures (31377 candidates) 5.
So - Neither (8245 candidates) 6.
Express disagreement (4891 candidates) 7.
Present simple or continuous (2863 candidates) 