摘要:Tom: Jane,have you done your homework 1 ?Mum will come in an hour. Jane: I have done some of them. Tom: Have you packed your chores together? Jane: Yes,I have.And I also have cleaned out my bedroom.How 2 you? Tom: I have 3 done my homework,but I 4 you give me a hand? Jane: Never.You had better do it by yourself. Tom: You 5 to take care of me,because I am your little brother. Jane: It is up to you.You have troubled me so many times. Tom: OK.I will help myself, my good sister. ... 答案:1.yet 2.about 3.already 4.haven't 5.have ●Exercises for grammar

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