问题补充:
It nearly two weeks I had received his letter.
A. is, that
B. was, that
C. is since
D. was, since
答案:
A. is, that
B. was, that
C. is since
(答案→)D. was, since
解析:since,for作为连词,引导时间状语(从句)如果谓语动词是延续性的一般过去时,其表达的含义是从这个动作结束以来,恰好和动词的词义相反,具有否定的含义;如果谓语动词是非延续性的一般过去时,其表达的含义是从这个动作开始以来,恰好和动词的词义一致,具有肯定的含义