There is somebody knocking at the door .Go to see( ) it is.

问题描述:

There is somebody knocking at the door .Go to see( ) it is.

who 绝对正确

who
祝你学习愉快! (*^__^*)
请及时采纳,多谢!

who
不明白的再问哟,请及时采纳,多谢!

who