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To do a bit for the motherland, . A. working hard is necessary B. to learn a for

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To do a bit for the motherland, . A. working hard is necessary B. to learn a for

To do a bit for the motherland, ______.

A. working hard is necessary       B. to learn a foreign language is needed

C. it is important to master science D. one should serve the people whole-heartedly

试题答案

D