1 . These clients go around ________ (购买) paintings and photography works of famous artists. (根据汉语提示单词拼写)

2 . The test questions are kept secret so as to __________ (to stop something from happening) cheating. (根据英文提示单词拼写)

3 . To s_________ (to make something stronger) my immune system, I joined a fitness club. (根据首字母单词拼写)

4 . To s_________my immune system, I joined a fitness club.(to make something stronger) (根据首字母单词拼写)

5 . 我姐姐为了在我生病期间陪我，从北京回来了。
My sister has come back from Beijing to ______ ______ ______ during my illness.

7 . To e________(谋生), some opened up shops and restaurants in Chinatown. (根据汉语提示完成句子)

8 . 在中国的中秋节，家家户户欢聚一堂，观赏明月，品尝美味的月饼。
During the Mid-Autumn Festival in China, families gather together to ________ the shining moon and ________ the delicious moon cakes.

9 . 超过30万来自世界各地的人，来到美国寻找财富，使旧金山迅速成为一个大城市。
Over 300,000 people came from all over the world to_________ _________ _________ in the US, making San Francisco quickly become a big city.

10 . The parents always eat plain meals in order to leave all the best things for their children.(同义句转换)
The parents always eat plain meals ________ ________ ________ leave all the best things for their children.