tests by paka98 with the online test builder (12 tests)
Ranked by: number of candidates
1. Agreement of subject and verb (31957 candidates)
2. Active and Passive Voice (26897 candidates)
3. Conditional (23730 candidates)
4. Formation of adjectives (10265 candidates)
5. Gerunds (9950 candidates)
6. Opposites by adding prefixes (6015 candidates)
7. Formation of verbs (5091 candidates)
8. Formation of nouns (4025 candidates)
9. Weather and the Environment (3186 candidates)
10. Comparative and superlative (3132 candidates)
11. Irregular plurals (2227 candidates)
12. Question Tags (1628 candidates)