No doubt he knew the news.A. thatB. ifC. whetherD. but

发布时间:2020-08-16 14:01:58

No doubt      he knew the news.
A. that
B. if
C. whether
D. but

网友回答

(答案→)A. that
B. if
C. whether
D. but
解析:考查doubt的用法。doubt用于肯定句时用whether引导同位语从句;用于否定句时,用that引导。句意:无疑他知道这个消息。根据No可知本句为否定句,句首省略there is,故选A。
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