I am afraid that I___finish the task in such a short time.Could you help me.A.can B.am not able to

I am afraid that I___finish the task in such a short time.Could you help me.A.can B.am not able to

题目
I am afraid that I___finish the task in such a short time.Could you help me.A.can B.am not able to
C.am going to D.could选什么?
答案
选B
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