he_asleep when there_aloud knock at the door. A was just fal
he_asleep when there_aloud knock at the door. A was just fal
He was sleeping when there was a loud knock at the door.[对sl
The Greens ()(have)supper when there was a knock at the door
There was a knock at the door when we () () (have) supper
he was falling ____(sleep) when he geard a knock at the door
knock at the door
She was cocking when she heard someone ( )knock at the door
WHEN I WAS READING I HEARD SOMEONE -----(KNOCK)AT THE DOOR
there was a knock on the door.
There was a knock at the door.It was the second time someone
while he was reading the letter,he heard a knock at the door
There was a knock at the door.(改为同义句)_____ ______ ______ the