一道英语选择题：-----the policeman heard the cry for help,he rushed out of the room.
问题描述：
一道英语选择题：-----the policeman heard the cry for help,he rushed out of the room.
a.though b.now that c.as soon as d.while.
选哪个?请告诉我原因和这四个选项的区别.
答
答案选 c.as soon as 一…就…
警察一听到喊救命,就立刻冲到房间去.
a.though conj.虽然；尽管
b.now that既然；由于
d.while conj.虽然；然而；当……的时候