tests by paka98 with the online test builder (12 tests)
Ranked by: number of candidates
1. Agreement of subject and verb (31927 candidates)
2. Active and Passive Voice (26835 candidates)
3. Conditional (23682 candidates)
4. Formation of adjectives (10232 candidates)
5. Gerunds (9944 candidates)
6. Opposites by adding prefixes (5999 candidates)
7. Formation of verbs (5090 candidates)
8. Formation of nouns (4025 candidates)
9. Weather and the Environment (3185 candidates)
10. Comparative and superlative (3132 candidates)
11. Irregular plurals (2227 candidates)
12. Question Tags (1625 candidates)