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13. I work hard so I can always get good _________(分?jǐn)?shù) ). hardworking 單元基礎(chǔ)鞏固 fantastic grades 14. It’s _________(必需的 )for us to finish homework on time every day. 15. “Old habits die hard. ” is an old _________(諺語(yǔ) ). 16. With the teacher’s help, my brother can do much _________(good)in English now. necessary 單元基礎(chǔ)鞏固 saying better 17. They _________(true)won the first prize. 18. The math teacher is ______________ (serious)than the other teachers. 19. If you learn to enjoy _________(share)with others, you will surely be always happy. 20. He _________(break)the window, so he had to