近四十年来,中国发生了巨大的变化.
Great changes have in China in the past forty years.
天太热了.我们不介意把窗户打开.
It's too hot.We don't mind .
你们学校多久举行一次运动会?
does your school hold a sports meet?
上周,Jack从图书馆借了5本书.
Jack the library last week.
﹣Have you been to the Beijing Expo(北京世园会) in Yanqing?
﹣Yes, it's a of art, gardening, and high technology.(collect)
With the help of the teacher, there has been a great in her spoken English. (improve)