A. engine B. push-up C. collection D. Mrs A. birdwatching B. underline C. imperceptible D. plead A. play against B. leaflet C. importance D. exhausted A. fierce B. Toronto C. skim D. practise A. the poor B. student C. guy D. wag A. dreary B. whine C. salty D. bounce A. cold B. night C. faithfully D. anybody A. have a fever B. effect C. unbelievable D. continually A. obscure B. sub-zero C. machine D. move away from A. workmate B. bamboo C. fast D. centimetre