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[单选题]
—You were out when I dropped in at your house yesterday. —Oh, I________ for a friend from Beijing at the railway station.(1分)
A
was waiting
B
had waited
C
am waiting
D
have waited
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参考答案
试题答案：
A
答案解释：
解题思路： 考察时态应用。第一句时态过去时，意为过去某段时间正在发生的事情，因此第二句话过去进行时。
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