tests by here4u with the online test builder (683 tests)

521. Either...or/ Neither...nor/ Not ... either. (13565 candidates)
522. There is / are, and other forms... (5133 candidates)
523. To be / to have: -ing forms... (4335 candidates)
524. Enough with the Present Perfect... (22170 candidates)
525. Whose and use (5534 candidates)
526. Else and compound words (3747 candidates)
527. What, which and all that (7085 candidates)
528. Possessive idioms (3130 candidates)
529. Possessive or genitive Case (27717 candidates)
530. Possessive adjectives and pronouns. (26005 candidates)
531. Adjectives: where to place them? (17761 candidates)
532. Adverbs: Where to place them? 2 (5115 candidates)
533. Adverbs: Where to place them? 1 (12153 candidates)
534. For/Since: second step... (4048 candidates)
535. For/Since: first step ... (7201 candidates)
536. Make someone do/ Be made to do (10792 candidates)
537. Like/to like/likely... (5008 candidates)
538. Let's get dressed... (6515 candidates)
539. Other - The others - Another (4208 candidates)
540. Dream and Back to reality 2/2 (4328 candidates)