Mr. Smiths was busy writing a story, only ______ once in a while to smoke a ciga

题干

Mr. Smiths was busy writing a story, only ______ once in a while to smoke a cigarette.

A．to stop

B．to have stopped

C．being stopped

D．stopping

上一题下一题 0.65难度单项选择更新时间:2014-06-05 01:18:08

小学学科试题库

初中学科试题库

高中学科试题库