为了帮助大家高效备考雅思，新东方在线雅思频道为大家带来雅思写作的实用句型学习45，希望对大家雅思备考有所帮助。更多精彩尽请关注新东方在线雅思频道!

　　431.the further development of rich countries is dependent upon

　　432.rebellious

　　433.be under an obligation to give sb a helping hand in improving sth

　　434.The situation is completely unacceptable.

　　435.make allowance for 体谅

　　436.is a necessary supplement to the knowledge they gain from school course

　　437.reinforce children’s sense of responsibility

　　438.help them understand the famous saying” no pain no pain” better

　　439.corporal punishment

　　440.numerous studies have been done on

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