---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
科目：初中英語 來源： 題型：
---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
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