tests by here4u with the online test builder (679 tests)

541. May, Might, Should... what they mean... (24849 candidates)
542. Expressing Uncertainty : may-might-must... (21272 candidates)
543. When, While, Till etc, expressing time. (5699 candidates)
544. Whereas, Unless, Contrary to : contrasts (31869 candidates)
545. Like - As - and others... (3883 candidates)
546. Surprise...Surprise ! ... 2/2 (1121 candidates)
547. Surprise ...Surprise!... 1/2 (1674 candidates)
548. To sit or to sit down/ To stand or to stand up (2259 candidates)
549. Up and Down (2279 candidates)
550. Intention and refusal. (2390 candidates)
551. Agree or Disagree (13109 candidates)
552. How to make wishes... (5149 candidates)
553. Though/ in spite of ...Concession (43440 candidates)
554. How to express consequence (10274 candidates)
555. A/An - how to use (23631 candidates)
556. Direct and Indirect Interrogative forms ... (19216 candidates)
557. After, Afterwards and Then (18930 candidates)
558. Any and its compounds (7296 candidates)
559. Sleep- Sleepy- Asleep (1947 candidates)
560. Let's get married... (4219 candidates)