A. useful B. cut the cake C. pass away D. type A. garage B. pertinent C. coal D. central heating A. potato chips B. mad C. move away from D. laundry A. act B. full of C. suspect D. other A. Great Wall B. service C. yoyo D. bitter A. snag B. leaf C. expose D. earth A. safety rule B. shave C. at first D. one day A. download B. Chinese New Year's Eve C. happen to D. leave alone A. struggle B. air C. slope D. for sale A. much B. unpopular C. come down D. enthusiastic