The stamp on the letter is an art, from _______ we can get a lot of cultural knowledge.

Children ________ to play computer games too long. It may have a bad influence on their eyes.

Would you please tell me________to deal with all theproblems, Mr Feng

Either you or the headmaster ______ the prizes to the gifted students

Of all the sports shoes, John bought ______ pair. Then he had some money for socks.