有梦就别怕痛

 It is rare for there to be an equal number of male and female students on a university course. Traditionally, in Britain at least, physics students are mainly male. In/By contrast, students stud

1、 have been done, have been doing, have done have been done 已经被完成 The work has been done. 工作已经完成.（被我们完成,含被动意） have been doing 完成进行时 He has been playing computer games for 6 hours. 他到现在为止已经连续6小

Dear Professor David, I have been living in International House now for the past eight months and feel very much at home as it is very comfortable and reasonably priced. However, I would like to

 Write about the following topic: Life in the 21st century has indeed become fast-paced and frantic compared to that of 50 years ago, when the pace of life was slower. What do you think were th

Obesityrates among young children are growing. Parents are to blame for this becausethey have the strongest influence over their children's eating habits. Doyou agree or disagree? Yous