6. When ________ (结合；联合)with other sounds, it becomes beautiful music.

5. ① On the one hand, it can help me gain some practical experience _________________________________________________________.(我能将来从中获益)用定语从句翻译②_________________________________________________________.人们常常从旅游中受益很多。

③Good health ________(受益) from enough exercise and nice food.

4. ① ____________________________________________, the old worker has a lot of experience.

②____________________________________________老师把学生的作文限制在五百字以内。

3. To make members of a team perform better, the trainer first of all has to know their _____ and _____ (长处和弱点)

2. ____________________________________________我们公司将尽一切努力令顾客满意。

1.①If you just spend your time _______(权衡)advantages and disadvantages, you may get nothing in the end.

②A ________(均衡的) diet contains lots of fruit and green vegetables.

③____________________________________________它将也破坏生态平衡。

28. 用with 复合结构改写句子

　　 Because the old man led the way, we got there before dark.

_________________________________________________________________________________.

　 After the listeners took their seats, the concert began.

_________________________________________________________________________________.

　The thief was sent to the police station, and his hands were tied back.

_________________________________________________________________________________.

27. __________________________________________________________________.

　　 纵然失败，我也会继续努力。

26. There is ________ little time left ________ I have to tell you about it later.时间剩下的不多了，我只能以后再告诉你这件事。

25. When did the world ________ _________ ________(形成, 产生)?