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

601. Use of tenses : The worst enemy ? The best friend ? 2/2 (4034 candidates)
602. Use of tenses : The worst enemy ? The best friend ? 1/2 (9350 candidates)
603. Uncountables and Countables (4029 candidates)
604. Too (much/many) or Enough (3708 candidates)
605. Verbs of involuntary perceptions ... (2279 candidates)
606. Infinitive, continued ! (1978 candidates)
607. Infinitive after verbs expressing will power ... (8538 candidates)
608. Not everyone has ... (2178 candidates)
609. What about suggesting ... (4085 candidates)
610. Difficulties of the Passive Form (16264 candidates)
611. 'Make someone do'/'Have something done': (a little further) (42841 candidates)
612. We'd still like to work on more tenses ...(2/2) (1739 candidates)
613. We want to work with tenses ...(1/2) (2397 candidates)
614. Two simultaneous actions in the past ... (12480 candidates)
615. Cause ? Aim? Not mixing the two concepts ... (22436 candidates)
616. Absence of obligation (25120 candidates)
617. To talk someone into / out of doing something ... (2473 candidates)
618. Difficulties in Reported Speech (15478 candidates)
619. Will and Would: a little further (7209 candidates)
620. Used to / to be used to (33954 candidates)