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用动词的适当形式填空。 1. While we __________ (wait) for the bus, a girl __________ (run) up to us. 2. I __________ (telephone) a friend when Bob __________ (come) in. 3. Jim __________ (jump) on the bus as it __________ (move) away. 4. We __________ (test) the new machine when the electricity __________ (go) off. 5. She __________ (not want) to stay in bed while the others ________________ (all, work) in the fields. 6. While mother ________ (put) Cathy to bed, the door bell ________ (ring). 请下载附件： 点击下载 (责任编辑：admin) |