题目内容
【题目】We've been told the good news, but when and where to go for the exciting paid vacation __________ yet.
A. are not discussed B. have not been discussed
C. is not being discussed D. has not been discussed
【答案】D
【解析】后一分句的主语为 when and where to go for the exciting paid vacation, 表示的是一件具体的事,谓语动词用单数形式,由此排除A、B两项。根据句末的yet可知应该用完成时,即这件事还没有被讨论。因此D项正确。
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