幫我作作句

See if the below is okay for you?

1. As you are now still a student, all you need to do is to concentrate on your studies.

2. Joining the student association is a good way to improve your cooperation skill

3. The new marking scheme should be more fair for all levels of students

1.We must concentrate our attention on efficiency.
我們必須把注意力集中在效率上。

2.We need to improve our cooperation skill in order to win the games.
我們必須提高我們的合作技巧，才能驘得競賽．

3.You are required to familier with the marking scheme before attend the examination.

(1) His whole attention is concentrated on the subject.
他的全部注意力集中在這問題上面．
(2) We need their cooperation skill.
我們需要他們的合作技巧．　
(3) The new marking scheme is suitable for me.
新的市場計劃是適合我的．