tests by here4u with the online test builder (627 tests)

521. Possessive idioms (3116 candidates)
522. Possessive or genitive Case (27595 candidates)
523. Possessive adjectives and pronouns. (25761 candidates)
524. Adjectives: where to place them? (17696 candidates)
525. Adverbs: Where to place them? 2 (5078 candidates)
526. Adverbs: Where to place them? 1 (12062 candidates)
527. For/Since: second step... (4018 candidates)
528. For/Since: first step ... (7170 candidates)
529. Make someone do/ Be made to do (10664 candidates)
530. Like/to like/likely... (4982 candidates)
531. Let's get dressed... (6492 candidates)
532. Other - The others - Another (4190 candidates)
533. Dream and Back to reality 2/2 (4313 candidates)
534. Dream Holiday 1/2 (2383 candidates)
535. Can't help or Prevent (3187 candidates)
536. Can/could/may... Must/have to... (26976 candidates)
537. Too much ... Much too... (8304 candidates)
538. May, Might, Should... what they mean... (24776 candidates)
539. Expressing Uncertainty : may-might-must... (21147 candidates)
540. When, While, Till etc, expressing time. (5686 candidates)