tests by here4u with the online test builder (676 tests)

641. Forms of verbs (3658 candidates)
642. Increase your vocabulary 1-4 Synthesis (2937 candidates)
643. Increase your vocabulary 1-3 (2831 candidates)
644. Increase your vocabulary 1-2 (4394 candidates)
645. Increase your vocabulary (9558 candidates)
646. Relatives (2116 candidates)
647. Forms of verbs (3157 candidates)
648. If clauses (5820 candidates)
649. Present simple or continuous (29446 candidates)
650. Present simple (11657 candidates)
651. Present continuous (8731 candidates)
652. Forms of verbs (7407 candidates)
653. V - ing or infinitive (5332 candidates)
654. Relative pronouns (3078 candidates)
655. Prepositions and particles (1662 candidates)
656. Conditional present and past (25522 candidates)
657. Rephrasing and modals (11636 candidates)
658. For - since - ago and tenses (5914 candidates)
659. Use of tenses in a text (14188 candidates)
660. Rephrasing of verbs (4085 candidates)