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第一部分 必修2 Unit 4 Ⅰ.单句改错 1．We have to choose another road.This one is built. ________________________________________________________________________ 2．Parents' behavior will have an effect with their children. ________________________________________________________________________ 3．Ma Yun is great success in the business field. ________________________________________________________________________ 4．You should pay attention to underline the key information. ________________________________________________________________________ 5．Look! There are many people stand on the square. ________________________________________________________________________ 【答案】1.在is后加being 2.with→on 3.在great前加a 4．underline→underlining 5.stand→standing .语境填空 1．Once ______________， twice shy. 2．It took me a long time before I was able to fully________ what they had done for me. 3．Every system of the body____________ to laughter in some important or positive way. 4．After World War ， the population of most large American cities ____________； however, the population in many Sun Belt cities increased. | 
