The students were singing an English song _______ Mr. Xiang came into the classroom.
My shoes are too old to wear. I will go to buy a new_________this Sunday.
Are you_________the party, Wendy?
I thought the actor was famous, ______ none of my friends has ever heard of him.
- _______, where can I find the hospital?-Oh, go straight ahead.
I went home after I ______ the service in the hotel.