问题描述：
-Could you finish the task in two days?-_____.I have something else to do these days.
A.I could not
B.Yes,I think so
C.I'm afraid so
d.I'm asraid not
我也选的第四个，不过原因不清楚
A.I could not
B.Yes,I think so
C.I'm afraid so
d.I'm asraid not
我也选的第四个，不过原因不清楚
问题解答：
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