1 . Later, she studied Chinese medicine for many years with experts in the field, from ______ she gained a deep knowledge about traditional practices. (用适当的词填空)

2 . Our boss is said to come back next week, __________ our task will have been finished. (用适当的词填空)

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

4 . In our class there are 46 students, half of ___________ wear glasses. (用适当的的词填空)

5 . Over 120, 000 people in Norway, of _________ 40% are college students, use the app. （用适当的词填空）

6 . The Amazon River, from ________ the rainforest gets its name, is close to 6,400 kilometres in length -roughly 100 kilometres longer than the Yangtze River. (用适当的词填空)

7 . The Amazon river, from ______ the rainforest gets its name, is close to 6,400kilometers in length. (用适当的词填空)

8 . Lucy was absent from Mr Smith's lecture yesterday, _____________she made an apology to him. (用适当的词填空)

9 . It is a family of 8 children, all_____________ have got PhD in chemistry. (用适当的词填空)

10 . He has written the science fiction, the name_____________ I have completely forgotten. (用适当的词填空)