hard is the key to success. A. To workB. WorkC. WorkedD. Works

发布时间：2020-08-20 11:11:44

     hard is the key to success.
A. To work
B. Work
C. Worked
D. Works

网友回答

(答案→)A. To work
B. Work
C. Worked
D. Works
解析：动词不定式主语，其他词不能单独用作主语，故选A。
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