Question

The teacher together with his students _______ down at the desk and having a discussion in the classroom.

1. A.
   is sitting
2. B.
   sat
3. C.
   are sitting
4. D.
   would sit

Answer 1

A
如主语是单数,尽管后面接as well as   no less than , with, like, together with , but, expect , besides等引导的词组,谓语还是用单数.