Question

I think Tom, as the head of a big department, should either study regularly or______    his job.

A．quits

B．to quit

C．quitting

D．quit

Answer 1

D
【考点】并列结构

either…or+并列结构，前后形式上保持一致，由此与study相呼应，故答案选D，用动词原形。