you start, you should go ahead.A. OnceB. BeforeC. UntilD. Though

发布时间：2020-08-17 03:51:25

     you start, you should go ahead.
A. Once
B. Before
C. Until
D. Though

网友回答

(答案→)A. Once
B. Before
C. Until
D. Though
解析：句意：一旦你开始，你就应该继续。once一旦；before在……以前；until直到……才；though虽然，尽管。根据句意故选A。
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