选B
be able to 强调能力上的不足,
从句意来看,需要否定形式
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
C.am going to D.could选什么?
C.am going to D.could选什么?
英语人气：489 ℃时间：2019-09-18 02:39:44
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