Susan ______ me a letter since last summ
问题:
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
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