We didn't know his telephone number；otherwise we（ ）him.
A、
would have telephoned
B、
must have telephoned
C、
would telephone
D、
had telephoned
【正确答案】：A
【题目解析】：
otherwise表示否则，是虚拟语气的标志词，对过去虚拟用would have done。句意：我们不知道他的电话号码，否则我们就给他打电话了。
We didn't know his telephone number；otherwise we（ ）him.
A、
B、
C、
D、
【正确答案】：A
【题目解析】：
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