问题
选择题
. _________ is good for you going to bed early and getting up early.
A．It
B．As
C．This
D．That
答案
答案：A
It 为形式主语，真正主语为going to bed early and getting up early。句意：早睡早起对你有好处。
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. _________ is good for you going to bed early and getting up early.
A．It
B．As
C．This
D．That
答案：A
It 为形式主语，真正主语为going to bed early and getting up early。句意：早睡早起对你有好处。