We sell this sweater ______ $ 10.[ ]

Would you like cup of coffee?—No, thanks. I’ve had enough.

Do you know the man 　　　　 came here yesterday? — Yes, he brought me the most interesting book 　　　　 I had wanted to buy.

_____ at the door before you come into the room.

We ___________ for a long time. Shall we play for a while?