题目内容

—You were out when I dropped in at your house.
—Oh, I ________ for a friend from England at the airport.
A．was waitingB．had waitedC．am waitingD．has waited
A
句意是：(你来我家时) 我正在机场等候一位从England来的朋友。表示在过去某一时刻或在过去某一段时间内正在发生的事，用过去进行时，所以选A。
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