what,that,whomever,whatever,whoever,how 

   You know 1. the telephone uses electricity. 2. you say into a phone creates sound waves. An electric current carries the sound to 3. is listening. Basically,this is 4.  a telephone operates. You can talk to 5.you like and say 6. you think.

9. 1 have no idea (我们什么时候会再见面) .

8. The boy remained (你告诉他去站着的地方) for over half an hour.

7. Being honest is always appreciated,but you have to be careful about(你如何说事情) .

6. Mr. Norman regrets (他没进行更多旅行) in his youth.

5.(邻居们会想什么) bothers him too much.

4. There will be enough food for (你邀请的任何人) .

3. It is true (一个人必须懂英语) in order to study at an American university.

2. (这座桥是如何建成的) is a fascinating story.

1. My mother told me(我们参观的目的是什么) .