1 . Do you believe a sneeze in the morning can kill you in the afternoon? This happened in 1918, ________ a deadly form of influenza swept across the world. (用适当的词填空)

2 . The square in front of the city’s town hall, ________ the couple had just had lunch with civic leaders, was surrounded by thousands of Chinese, many of them local students. (用适当的词填空)

3 . As a boy, he spent time in the larger cities of Italy, France and Switzerland, ________ bottled water is consumed daily. (用适当的词填空)

4 . Stories like that are more common in parts of the world ________ multigenerational living is more firmly rooted. (用适当的词填空)

5 . The Olympics are an extraordinary sporting event __________(hold) every four years, ____________ thousands of ___________(high) trained and talented athletes gather together in the spirit of friendship, solidarity and fair play in order to compete________ each other in different events. (所给词的适当形式填空)

6 . The film tells a story happening in the year 1921, ____the Communist Party of China held its first National Congress in Shanghai and Jiaxing, Zhejiang province. (用适当的词填空)

7 . Monarchs (黑脉金斑蝶) are the only butterflies known to make two-way migrations, as birds do. In the late summer and early fall, the butterflies typically leave southern Canada and northern and central regions of the United States. They make a dangerous trip to Florida and Mexico, _______ the weather is warmer. (用适当的词填空)

8 . Most skiing competitions of the Winter Olympics were held in areas northwest of Beijing, _______ it’s cold in the winter but often doesn’t snow much. (用适当的词填空)

9 . He regularly checked his secret drawers, _______were stored some precious paintings and jewels. (用适当的词填空)

10 . Molai built at the top of each sapling (幼树)a bamboo platform, ________ he placed earthen pots with small holes to collect rainwater. (用适当的词填空)