问题
选择题
I _______ my homework, I guess I can't join you. [ ]
A. don't finish
B. didn't finish
C. haven't finished
D. won't finish
答案
答案：C
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I _______ my homework, I guess I can't join you. [ ]
A. don't finish
B. didn't finish
C. haven't finished
D. won't finish
答案：C