说明理由1.— Someone is knocking at thedoor.Is it Ann?— It _____
---someone is knocking at the door.Who _____ it be?
Someone is knocking at the door.Who it be?— It be Tom.He is
Someone is knocking at the door.___ it be Venis?—No,it ___ b
Open the door!Someone is knocking at it.It _____ Mr Zhang.He
Someone is knocking at the door.____ is it?
6.There is someone 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 .
someone is knocking at the door,who is it? A this is a polic
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
There is someone knocking at the door.It may ________ (be) t