1 . The old man has two daughters, both of ____________ work as doctors. （用适当的词填空）

2 . I’m sure there are all kinds of historic sites ____________ cultural relics need to be protected. (用适当的词填空)

3 . The teacher with __________ you talked yesterday is our maths teacher. (用适当的词填空)

4 . The reason __________ he was absent was quite complicated. (用适当的词填空)

5 . It is used in products from cups that keep your drinks hot or cold to packaging materials ________ protect items during shipping. (用适当的词填空)

6 . To engage myself in the local industrial atmosphere, I chose a hotel in the “industrial park”, ________ the coexistence of advanced manufacturing and natural beauty was most evident, as it was situated on the edge of a scenic lake, embraced by a vibrant landscape.

7 . A school-home is exactly ________ it sounds like. We get the homeless off the street, and we educate them so they don’t have to return to the street. We teach them how to be gardeners, painters, carpenters, bricklayers, electricians, and air-conditioning repairmen. (用适当的词填空)

8 . She was much younger than the other members in the conservation and research team at the Mogao Caves, ________leader was her father Chang Shuhong (1904-1994), a noted painter and director of the Dunhuang Academy. (用适当的词填空)

9 . The 2022 Winter Olympic Games in Beijing can be seen as a good example of________ young people have embraced China Chic. (用适当的词填空)

10 . Although we do not know very much about________ kind of life forms exist in deep ocean trenches(深海沟), marine scientists have found a certain type of jellyfish(水母) in the Mariana Trench, the world’s deepest ocean area. (用适当的词填空)