Dad, this is Tom and this is Mike. _____ are my new friends.

- How often are the Olympic Games held? -             four years.       

 Aunt Wang bought two ________for me yesterday.

— How much should I pay for the food, Sir?— It costs ______. The food is free on our ship. ______ needs to pay for it.

—He was___________ tired___________ he fell asleep as soon as he lay down.—Oh, we can go out and let him have a good rest.