Listen ,There are some children knocking ()Mrs Brown is door
Listen ,There are some children knocking ()Mrs Brown is door
Listen!Who is knocking at the door?
1.---Listen!Sometime is knocking the door.
--Listen! Someone is knocking at the door.
单句改错:listen!someone is knocking the door
--Listen! Someone is knocking at the door. Who _____it be?
改错Listen!Somebody is knocking the the door.
Listen! Someone is knocking _________ the door. [  
---Listen! Someone is knocking at the door. Who _____it be?
Listen!_______(有人)is knocking at the door.
Listen,l hear someone knocking at the door的同义句 Listen!There
There is someone knocking at the door.为什么用“knocking”,要加“ing”