关于it的用法1:Someone is knocking at the door .Go and see_____.为什

someone is knocking at the door （）i go and see who it is A s someone is knocking at the door .（）i go and see who it is A Someone is knocking at the door.____ is it? —Someone is knocking at the door. —Yes, I’ll go and see who 一道英语填词题There is someone knocking at the door.Please go and s someone is knocking at the door.who [ ]it be? ---someone is knocking at the door.Who _____ it be? -----Someone is knocking at the door.It ____ be Tom . --Listen! Someone is knocking at the door. there is ( ）knocking at the door.GO and see who it is A nobo Someone is knocking at the door.Who can it be?的回答.A.Nothing Someone is knocking at the door.Who it be?— It be Tom.He is