look t_ the keyhole when you hear the doolbell ,If there are strangers ,ask "who is "

分类: 作业答案 • 2021-12-29 17:05:49

问题描述：

look t_ the keyhole when you hear the doolbell ,If there are strangers ,ask "who is "
with the door locked and say "come and back

答

look through
who is it