题目内容
【题目】Steven ________ his dog for a walk when I called him yesterday evening.
A.takesB.tookC.is takingD.was taking
【答案】D
【解析】
句意:昨天晚上当我打电话给史蒂文的时候,他正在遛狗。
A. takes 带去,第三人称单数;B. took带去,过去式;C. is taking正在带去,进行时;D. was taking正在带去,过去进行时。根据when I called him yesterday evening.可知主句用过去进行时,其结果是was/were doing的形式,主语是单数,这里是was。根据题意,故选D。
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