There is no point advocating banning smoking in public the law is introduced.A. whenB. u

发布时间：2020-08-17 10:04:09

There is no point advocating banning smoking in public      the law is introduced.
A. when
B. unless
C. since
D. because

网友回答

A. when
(答案→)B. unless
C. since
D. because
解析：B 考察连词。句义：除非成为法律条文，否则在公共场所倡议禁止吸烟是没有意义的。When当..时；unless除非；since自从；because因为；故B正确。
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