Tom's mother taught him to read and write,and she found him _____ a very good pupil.

问题描述:

Tom's mother taught him to read and write,and she found him _____ a very good pupil.
Ato be B was C is
讲为什么
我觉得错了啊

选A
如果选B,前面的him不应该用宾格,C就更不可能了,时态都不一致
find sb to be sth = find sb sth
I find him to be a good student=I find him a good student