A. learnt B. abuse C. endanger D. perfect A. chew B. lighting C. search D. birdwatching A. cheat B. shyly C. carelessness D. untold A. ran B. compile C. Mars D. be from A. necessary B. grammar C. bring D. remind A. Tuesday B. glider C. headmaster D. negligible A. hard B. output C. true D. deep A. reporter B. say thanks to C. curtain D. recuperation A. join B. online C. be opposed to D. the day after tomorrow A. even if B. a little C. bathtub D. language