答案是A.因为同时用两个或更多的疑问词引导的主语从句看作是一个整体,谓语用单数.但如果是两个并列的主语从句作主语,谓语应该用复数.
如：What he has done and why he did it are not quite clear.
when and where的题问句谓语动词是单数还是复数?
when and where的题问句谓语动词是单数还是复数?
看文章,做题的时候既看到有单数又有复数,有点纠结,什么时候要单数,什么时候用复数?比如We will hold an English contest,but when and where ( )yet A hasn't been decided B haven't been decided
我老觉的是单数,但就是不懂为什么,还有最好告诉我什么时候用复数,有一个例句是最好啦
看文章,做题的时候既看到有单数又有复数,有点纠结,什么时候要单数,什么时候用复数?比如We will hold an English contest,but when and where ( )yet A hasn't been decided B haven't been decided
我老觉的是单数,但就是不懂为什么,还有最好告诉我什么时候用复数,有一个例句是最好啦
英语人气：419 ℃时间：2019-08-14 21:49:38
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