tests by here4u with the online test builder (669 tests)

581. Still /yet/ not ... yet (4705 candidates)
582. As/ However /No matter + adjective (11974 candidates)
583. Rescue .... or Revenge 2/2 (1058 candidates)
584. Rescue ....... 1/2 (1364 candidates)
585. To mind and expressions (5194 candidates)
586. Learn and remember (4068 candidates)
587. Other / (the) others ... (2484 candidates)
588. To feel, look, seem, sound ... (6566 candidates)
589. Dozen, Hundred , Thousand, etc. (6695 candidates)
590. All or Whole .... (9351 candidates)
591. The more ... the fewer ... (18128 candidates)
592. Remain/Stay/Be left (3751 candidates)
593. For /During /While (22304 candidates)
594. Extraordinary little tree (Verbal forms) (2074 candidates)
595. Most /Most of the / the most ... (8896 candidates)
596. To be dead/to die/death and LIFE (3034 candidates)
597. Such a strange trial ... 2/2 Mix of tenses (1931 candidates)
598. Such a strange trial ...1/2 Past perfect (2021 candidates)
599. Quite or Quiet (1427 candidates)
600. Preterite or Present Perfect (20381 candidates)