You’d better ____________ late next time.
— Are you going to Beijing by air? — It’s fast, but expensive. So I’m not sure. I _____ take a train.
–Did Mrs. King leave a message? --Yes. She wanted to know_________ this Sunday.
Today my mother is feeling ______ to go to work.
The girl was often heard ______ happily in her room.
The key ____ for opening the door of the room.