tests by paka98 with the online test builder (12 tests)
Ranked by: number of candidates
1. Agreement of subject and verb (31889 candidates)
2. Active and Passive Voice (26783 candidates)
3. Conditional (23661 candidates)
4. Formation of adjectives (10158 candidates)
5. Gerunds (9930 candidates)
6. Opposites by adding prefixes (5993 candidates)
7. Formation of verbs (5086 candidates)
8. Formation of nouns (4024 candidates)
9. Weather and the Environment (3184 candidates)
10. Comparative and superlative (3131 candidates)
11. Irregular plurals (2224 candidates)
12. Question Tags (1625 candidates)