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Unit 1(Book 1,1-5) 1

Unit 2(Book 1,6-9) 31

Unit 3(Book 1,10-15) 60

Unit 4(Book1,16-20) 95

Unit 5(Book2,1-4) 117

Unit 6(Book2,5-8) 143

Unit 7(Book2,9-14) 178

The Appendix(附录) 210

Key to the Exercises(单项练习答案) 210

Key to the Comprehensive Exercises(单元综合练习答案) 216

An English Test(Ⅰ)(英语试题)(1) 226

An English Test(Ⅱ)(英语试题)(2) 234

Phrasal Verbs(短语动词) 244