Question

I think these students should do ______ part in keeping the class-room clean.

A．my	B．her
C．their	D．our

Answer 1

C

试题分析：句意：我认为这些学生应该尽他们的职责保持教室干净。do one’s part尽某人的职责，one’s要跟these students保持一致，故选C。