问题
选择题
— Did you receive the letter the next day?
— No. Somehow, it was three weeks ______ I received it.[ ]
A. since
B. when
C. that
D. before
答案
答案：D
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— Did you receive the letter the next day?
— No. Somehow, it was three weeks ______ I received it.[ ]
A. since
B. when
C. that
D. before
答案：D