As long as you keep on______hard, you’ll get promoted sooner or later.

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问题 As long as you keep on______hard, you’ll get promoted sooner or later.

选项 A、work
B、be working
C、worked
D、working

答案D

解析本题考查的是固定搭配keep on doing的用法，意为“继续做……”。四个选项中只有working是动名词形式，故D)为本题的答案。

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大学英语三级A级

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