A. were B. envelope C. flick D. tree A. herb B. from on C. mum D. mushroom A. workstation B. register C. big D. repair A. pest B. cleaned C. scorn D. go skating A. labyrinth B. can't C. hurry up D. winch A. song B. pencil sharpener C. it's D. unhurt A. from that moment on B. Canada C. snow D. fit in A. move B. watch C. to go D. participate A. phone B. bike C. Beijing Opera D. noisily A. teen B. cemetery C. on the phone D. failure