I can never be sure _______ on the day

发布时间：2021-04-06 02:45:47

I can never be sure _______ on the day.
　　—But you’d better have plans for your work.
　　A. what is going to happen B. why is going to happen
　　C. when is it going to happen D. how is it going to happen

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答案 ：A
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