I ___________ (listen) to the music when someone __________ (knock) at the door half an hour ago.
举一反三
- I heard someone _______ loudly at the door while I was listening to the radio. A: knock B: knocking C: to knock D: knocked
- I ____________ for about an hour and a half when suddenly I slipped and fell down a riverbank.
- I enjoy ______ to music when I am free. A: listening B: listen C: to listen D: hearing
- A: Listen! There__________ someone __________ at the door.B: It must be your sister. A: is; knocking B: is; knock C: are; knocking D: are; knock
- Scarcely ____ asleep when a knock at the door awakened her.