1 . Through Snow’s tireless effort, water companies began to sell clean water and the threat of cholera around the world saw a s ______ decrease. (用适当的词填空)

2 . When he got married, Alfred was too e________(尴尬，羞愧) to say anything to his wife about his job. (根据中英文提示单词拼写)

3 . It is d________(令人担心、不安) to think that a dangerous wild animal is still at large in the quiet countryside.(根据中英文提示单词拼写)

4 . Every Wednesday, we work at a soup kitchen and hand out food to h________ people in the community. (根据首字母单词拼写)

5 . The big clock which used to strike the hours day and night was damaged during the war and has been_________(无声的) ever since.(根据汉语提示单词拼写)

6 . It is indeed an honour for China’s ______(科学的) research and Chinese medicine to be spread around the world. (根据汉语提示单词拼写)

7 . He is a__________ to computer games. (根据首字母单词拼写)