He is really nervous. He ______ back and forth all the night waiting for the res

题干

He is really nervous. He ______ back and forth all the night waiting for the results.

A．had walked	B．has been walking
C．walked	D．is walking

上一题下一题 0.85难度单项选择更新时间:2015-06-05 04:35:41

小学学科试题库

初中学科试题库

高中学科试题库