是sit还是sat?

问题描述:

是sit还是sat?
I felt so embarrassed that I couldn’t do anything but ________ there when I first met my present boss.
A.to sit B.sitting C.sat D.sit

sat
分析:that引导的从句中谓语部分分两个:什么事都做不了,除了坐在那里
couldn't do 和 sat 处于相同的状态
如果是could do nothing but 后面可以是sit there