tests by here4u with the online test builder (667 tests)

621. Subject-verb inversions (3947 candidates)
622. Made of? from? with? or out of? (6030 candidates)
623. Vocabulary: speed and slowness (327 candidates)
624. Vocabulary: destroy, destruction (311 candidates)
625. Vocabulary: the weather (4491 candidates)
626. Prepositions and adverbs of LOCATION (2) (4768 candidates)
627. Prepositions, adverbs: LOCATION (1) (5827 candidates)
628. Else and compounds (522 candidates)
629. Infinitive form (4826 candidates)
630. Gerund (5216 candidates)
631. So or such (5339 candidates)
632. Conditions (2332 candidates)
633. Word order: no subject - verb inversion (610 candidates)
634. Infinitive (without 'to') (213 candidates)
635. To be to? or To have to? (803 candidates)
636. Vocabulary: belonging and possessing (388 candidates)
637. Standard or casual registers? (28 candidates) [Being reviewed]
638. Vocabulary: Taking a holiday (4284 candidates)
639. A few difficulties with pronunciation (3228 candidates)
640. Vocabulary: doing things... (4106 candidates)