题目内容
---Did you mend your bike this afternoon?
---Yes,I spent at least three hours_________ it.
A.finish doing B.to finish doing C finish to do D.finishing doing
D
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题目内容
---Did you mend your bike this afternoon?
---Yes,I spent at least three hours_________ it.
A.finish doing B.to finish doing C finish to do D.finishing doing
D