问题
选择题
I couldn’t help________ the computer because I was not free at that time.
A．repairing
B．repair
C．to repairing
D．repaired
答案
答案：B
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I couldn’t help________ the computer because I was not free at that time.
A．repairing
B．repair
C．to repairing
D．repaired
答案：B