---I have worked hard at English, but it seems that I haven’t made any progress.
---Keep on _____ at it, and you will be successful.
A．work B．working C．to work D．works
科目：初中英語 來源： 題型：
---I have worked hard at English, but it seems that I haven’t made any progress.
---Keep on _____ at it, and you will be successful.
A．work B．working C．to work D．works
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