He was surprised to see his mother at the back of the classroom. [ ]A. seat B. s
来源:网络
时间:
推荐文章
![He was surprised to see his mother at the back of the classroom. [ ]A. seat B. s](/pic/43_616207.jpg)
He was surprised to see his mother _______ at the back of the classroom.[ ]A. seat
B. seating
C. seated
D. to sit
试题答案
C