You must work hard, you will not learn English well.A. ifB. whetherC. otherwiseD. unless

发布时间:2020-08-16 07:59:36

You must work hard,     you will not learn English well.
A. if
B. whether
C. otherwise
D. unless

网友回答

A. if
B. whether
(答案→)C. otherwise
D. unless
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