英语 短训班用 中 1PDF电子书下载

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Lesson Fifteen It was cold yesterday. 1

Lesson Sixteen What else did you do last sunday? 27

Lesson Seventeen We've Learned Lesson 16. 53

Lesson Eighteen He has been a student for four months. 80

Lesson Nineteen 　This one is just as long as that one. 108

Lesson Twenty He speaks faster than John. 140

Revision 170

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