tests by here4u with the online test builder (669 tests)

521. There is / are, and other forms... (5128 candidates)
522. To be / to have: -ing forms... (4334 candidates)
523. Enough with the Present Perfect... (22162 candidates)
524. Whose and use (5525 candidates)
525. Else and compound words (3747 candidates)
526. What, which and all that (7080 candidates)
527. Possessive idioms (3130 candidates)
528. Possessive or genitive Case (27715 candidates)
529. Possessive adjectives and pronouns. (26000 candidates)
530. Adjectives: where to place them? (17760 candidates)
531. Adverbs: Where to place them? 2 (5115 candidates)
532. Adverbs: Where to place them? 1 (12149 candidates)
533. For/Since: second step... (4047 candidates)
534. For/Since: first step ... (7195 candidates)
535. Make someone do/ Be made to do (10783 candidates)
536. Like/to like/likely... (5005 candidates)
537. Let's get dressed... (6515 candidates)
538. Other - The others - Another (4208 candidates)
539. Dream and Back to reality 2/2 (4328 candidates)
540. Dream Holiday 1/2 (2387 candidates)