It worries herself a lot ____she hasn't got along well with her classmates.
问题描述：
It worries herself a lot ____she hasn't got along well with her classmates.
A while
B if
C that
D for
答
正解是C.
这里it 是形式主语,
she hasn't got along well with her classmates.作真正的主语,从句中不缺少成分,故用that引导主语.