单项选择题

He ______ into the office building when the fire bell rang.

A． goes
B． has gone
C． was going
<上一题 目录 下一题>
热门 试题

单项选择题
Grandmother is ill. We must ______ a doctor.
A． send away
B． send off
C． send for
单项选择题
They didn't go to the park last Saturday ______ it was raining hard.
A． that
B． while
C． because
相关试题