问题
选择题
_______ is known to everybody that the moon travels round the earth once every month.
A．It
B．As
C．That
D．What
答案
答案：A
it 为形式主语，真正的主语是后面的 that 从句。
搜题请搜索小程序“爱下问搜题”
_______ is known to everybody that the moon travels round the earth once every month.
A．It
B．As
C．That
D．What
答案：A
it 为形式主语，真正的主语是后面的 that 从句。