tests by paka98 with the online test builder (12 tests)
Ranked by: number of candidates
1. Agreement of subject and verb (31898 candidates)
2. Active and Passive Voice (26786 candidates)
3. Conditional (23664 candidates)
4. Formation of adjectives (10159 candidates)
5. Gerunds (9930 candidates)
6. Opposites by adding prefixes (5993 candidates)
7. Formation of verbs (5088 candidates)
8. Formation of nouns (4025 candidates)
9. Weather and the Environment (3185 candidates)
10. Comparative and superlative (3132 candidates)
11. Irregular plurals (2224 candidates)
12. Question Tags (1625 candidates)