3 . While I tend to buy a lot of books, these three were given to me as gifts, which might add to the meaning I attach to them. (同义句转换)
________ I tend to buy a lot of books, these three were given to me as gifts, ________ to the meaning I attach to them.

4 . He explained the problem we faced and________ ________all the money we collected only________ ________ ________half of what we needed and that the coming cold weather would definitely（肯定地）________ ________our difficulties. （用add的相关短语填空）

5 . He explained the problem we faced and________ (补充说) that all the money we collected only________ (总共是) half of what we needed and that the coming cold weather would definitely________ (增加) our difficulties. （根据汉语提示完成句子）

7 . Imagine ________ sing together with hundreds of other people while you are at home alone. You can do this in a virtual choir. . . Many people do not have close friends or contacts who have the same interest in music. Many others do not have the chance to join a local choir. A virtual choir ________ their voices to those of other individuals and become part of the global community. （根据句意填空）

8 . It is too salty. Would you please ________________ (往……加些水) the soup? (根据汉语提示完成句子)