Although the lecture had already been on for five minutes,I still was not able to find a chair____.
问题描述：
Although the lecture had already been on for five minutes,I still was not able to find a chair____.
A.to sit
B.for to sit on
C.to sit on
D.for sitting
答
选c.
虽然演讲已经开始5分钟了,但是我仍然没找到椅子坐.
sit on 坐在……上.