高考问答弹弓用的钢珠多大合适:一道英语题
来源：百度文库 编辑：高考问答 时间：2024/04/29 04:25:56
When and where he was born().
A.is unknown to us
B.are unknown to us
C.as is known to us all
D.which are known to us all
A.is unknown to us
B.are unknown to us
C.as is known to us all
D.which are known to us all
A
when and where做句子主语,是单数情况,谓语用单数,所以只能用A
A 这里“when and where”表示一类情况，所以视为单数，如果是两个无关联的词用and连接，那么就视为复数。
A
这是主语从句
B
A
c