问题
选择题
Susan ______ me a letter since last summer. It will be a surprise to receive her letter. [ ]
A. hasn't sent
B. hadn't sent
C. has sent
D. had sent
答案
答案：A
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Susan ______ me a letter since last summer. It will be a surprise to receive her letter. [ ]
A. hasn't sent
B. hadn't sent
C. has sent
D. had sent
答案：A