1 . Through Snow’s _____________, water companies began to sell clean water and the threat of cholera around the world saw a substantial decrease.
经过斯诺的不懈努力，饮用水公司开始出售洁净水，世界各地霍乱的威胁大幅降低。

2 . Grocery stores try to have enough ________（employee）at checkout to get all their customers through with minimum delay. (所给词的适当形式填空)

3 . Moreover, music gave me hope and a sense of ________ (satisfy). (所给词的适当形式填空)

5 . 【课本改编题】
Economic development is necessary if we want to improve society.... and it is not possible to preserve everything from our past as we move towards the future. Finding and keeping the right ______ and the protection of cultural sites can be a big challenge. （根据课文内容填空）

6 . The authorities took effective m______ to reduce crimes, which benefited residents greatly. (根据首字母单词拼写)

7 . The primary f______ of a house is to provide warmth and shelter but not to earn a profit. (根据首字母单词拼写)

9 . 【课本改编题】
The antelope population has … and in June 2015, the Tibetan antelope ______. The government, however, does not intend to stop the protection programmes, since ______ the Tibetan antelope have not yet disappeared. (根据句意完成句子)

10 . Many people in China have limited ________ (expose) to English. (所给词的适当形式填空)