Not only the students but also their teacher ______ at the meeting.

问题描述:

Not only the students but also their teacher ______ at the meeting.
A.was present
B.were present
C.have been presented
D.has been presented
选哪个啊,翻译?
正确答案是选A 啊,。。
迷惑。。

A,应该为A,应跟后面的用单数,present在这里是形容词出席的意思