问题
选择题
___ is everyone’s duty___ the law.
A．That; do obey
B．It; to obey
C．That; obeying
D．It; obeying
答案
答案：B
it 是形式主语, 真正的主语是to obey the law.
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___ is everyone’s duty___ the law.
A．That; do obey
B．It; to obey
C．That; obeying
D．It; obeying
答案：B
it 是形式主语, 真正的主语是to obey the law.