A. reached

　　B. are reaching

　　C. have been reached

　　D. had reached

　　25. Their new teacher has arrived, but they ______ that he ______ until this morning.

　　A. didn't know; was coming

　　B. don't know; would come

　　C. didn't know; has come

　　D. don't know; will come

　　26. Because of climate change, the ice that polar bears depend on for survival ______. (2017·长郡中学月考六)

　　A. are slowing disappearing

　　B. is slowly disappearing

　　C. are slowly disappeared

　　D. have slowly disappeared

　　27. It's only six o'clock now; Little Tom should be up, though, because he ______ for nine hours. (2017·雅礼月考六)

　　A. has been sleeping

　　B. had been sleeping

　　C. has slept

　　D. had slept

　　28. Experience is believing. If you'd like to know what it ______ like to be a soldier in World War Ⅱ， ______ the game “Brothers in Arms: Roads to Hill 30”. (2017·师大附中月考六)

　　A. would be; try

　　B. was; try

　　C. would be; trying

　　D. was; trying

　　29. — Good morning，Doctor Smith's office.

　　— Hello, this is John Brown. Could you please tell Doctor Smith I ______？ My car ______ start. (2017·师大附中月考六)

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