Mục lục
Unit 7: Traffic...........................................................................................................
5
Unit 8: Films......................................................................................
12
Unit 9: Festivals in the world.............................................................
18
Review 1 - Basic (Units 7, 8, 9).........................................................
25
Review 2 - Advanced (Units 7, 8, 9).................................................
32
Unit 10: Sources of energy................................................................
39
Unit 11: Travelling in the future........................................................
45
Unit 12: An overcrowded world........................................................
51
Review 3 - Basic (Units 10, 11, 12)...................................................
57
Review 4 - Advanced (Units 10, 11, 12)...........................................
63
End - of - term test 1 (Basic)............................................................
69
End - of - term test 2 (Advanced).....................................................
75
Answer keys......................................................................................
83