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11.Peters mother died three years ago. She ____ for three years A.died B.was dead C.has been dead D.has dies 12.I have finished my homework. ----When ____ you it?----An hour ago. A.have; finished B.do; finish C.did; finish D.will; finish 13.Hes lived here ____ 1980. A.after B.in C.from D.since 14.He has ____ been to Shanghai， has he? A.already B.never C.ever D.still 15.Listen， Mary ____ in her room. A.sing B.is singing C.sings 16.My sister ____ middle school half a year ago. A.will finish B.finishes C.finished 17.There ____ a parents meeting tomorrow afternoon. A.are B.will have C.is going to be 18.I ____ him since I began to live in the city. A.know | 
