---______do you have a sports meeting? ---Twice a year.   

Many people think Peng Liyuan is the most beautiful First Lady, and            songs are very popular.

— __________ do the new hair clips cost? —They are only ten yuan. 

 --With the _____________ of science and technology, people can talk with each other much more conveniently than before.--But China is still a __________ country, people have to work hard to live a better life. 

He went to school by car this morning.