1 . The brain chemicals _____________ (释放) during exercise improve a person’s mood and help those who are stressed out. (根据汉语提示单词拼写)

2 . They launched a project __________ (设计) to help the homeless. (根据汉语提示单词拼写)

3 . This hospital________ (attach) to the medical college nearby was destroyed in the flood. (所给词的适当形式填空)

4 . But he became inspired when he thought about helping ordinary people e__________ to cholera. （根据首字母单词拼写）

5 . The experience _________ (获得) from that job really benefited him a lot . (根据汉语提示单词拼写)

6 . We think the essay to be by far the best one ______ (提交). (根据汉语提示单词拼写)

7 . The ambassador said the move was part of a deal to swap prisoners in Russia for the accused spies________(arrest) in the U.S. (所给词的适当形式填空)

8 . The book ________ (base) on his own experience is a great success. （所给词的适当形式填空）

9 . The scientists, ________(commit) to the research of the Mars, found no signs of life there. （所给词的适当形式填空）

10 . The pianist________(包围，围绕) by a crowd of fans will hold a concert in the Workers’ Stadium. (根据汉语提示单词拼写)