单选题
My mother and father ______ for a new house at that time.
A. look B. were looking
C. would look D. looked
A
B
C
D
【正确答案】
B
【答案解析】
[解析] at that time(当时)，表示在过去特定时态进行的情况，过去进行时最合适。
词汇：look for寻找
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