tests by here4u with the online test builder (670 tests)

581. Last and The last (2514 candidates)
582. Should ... (Step 2) (1569 candidates)
583. V- ing or infinitive (4771 candidates)
584. Should ( Ought to) (9612 candidates)
585. Never ... Ever (1975 candidates)
586. Still /yet/ not ... yet (4722 candidates)
587. As/ However /No matter + adjective (12063 candidates)
588. Rescue .... or Revenge 2/2 (1082 candidates)
589. Rescue ....... 1/2 (1378 candidates)
590. To mind and expressions (5221 candidates)
591. Learn and remember (4094 candidates)
592. Other / (the) others ... (2494 candidates)
593. To feel, look, seem, sound ... (6588 candidates)
594. Dozen, Hundred , Thousand, etc. (6716 candidates)
595. All or Whole .... (9396 candidates)
596. The more ... the fewer ... (18303 candidates)
597. Remain/Stay/Be left (3798 candidates)
598. For /During /While (22557 candidates)
599. Extraordinary little tree (Verbal forms) (2077 candidates)
600. Most /Most of the / the most ... (8982 candidates)