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一 、单选 1、 Look！ He _____their mother do the housework. A. is helping B. are help C. is help D.is helpping 2 、_____are the boys doing ？ They are singing in the room. A .Who B .How C.What D.Where 3、 Don't talk here. My mother _____. A. is sleeping B .are sleeping C. sleeping D .sleep 请下载附件： 点击下载 (责任编辑：admin) |