Unit 1 Internal Operation of Companies 1
Unit 2 External of Companies 15
Unit 3 Exhibitions 30
Unit 4 Transport and Delivery 41
Unit 5 Starting a Business 51
Unit 6 Cars 63
Unit 7 Real Estate 74
Unit 8 Biotechnology 87
Unit 9 The Economy 100
Unit 10 Social Problems 114
Grammar Reference 128