Exercise 1. Complete the sentences with proper prepositions. 用合适的介词完成句子 1) They are arguing __________ politics. 2) The closure of the factory will cause severe damage _________the local economy. 3) Family members always get together _________ the Spring Festival. 4) The joy of reading lies __________ the process of finding a good book. 5) __________ reading, we’re able to experience various kinds of life. 6) There are many benefits we can get __________ doing sports.