Tom is a person. He thinks no one can be successful without .A. hard-working hard workB.

问题补充：

Tom is a person. He thinks no one can be successful without .

A. hard-working, hard work

B. hard-working, work hard

C. working-hard, hard work

D. working-hard, work hard

答案：

A. hard-working, hard work

B. hard-working, work hard

C. working-hard, hard work

D. working-hard, work hard

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