703] So far nothing Tom. I want to know the reason he hasn’t written to me. [译文] 到目前为止.还没有收到汤姆的任何来信.我想知道他没给我写信的原因. A. heard from; why B. has been heard from; why C. was heard from; that D. has heard from; that [答案及简析] B. 含有so far的句子应该时现在完成时态,reason作先行词.定与从句应该用that引导. 【
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