A. blackboard B. convoy C. Christmas Eve D. unhappy A. in that case B. hardworking C. listen to D. between A. recycle B. in person C. brown D. dustman A. progress B. forty C. cut up D. submit A. disappointment B. counter C. snow D. acid A. art B. arcade C. sharpen D. leap A. pencil B. invite C. come back D. attach A. Information Centre B. gasoline C. protection D. weather A. labor B. itself C. concept D. schoolbag A. unsettle B. ski C. Chinese D. on foot