问题
选择题
_____ is known to everybody, the moon travels round the earth once every month.
A．It
B．As
C．That
D．What
答案
答案：B
as 引导的是一个非限制性定语从句。
搜题请搜索小程序“爱下问搜题”
_____ is known to everybody, the moon travels round the earth once every month.
A．It
B．As
C．That
D．What
答案：B
as 引导的是一个非限制性定语从句。