Unit 1 Ancient Greece
Exercise 1
Exercise 2
Exercise 3
Unit 2 Traditional skills
Exercise 1
Exercise 2
Exercise 3
Unit 3 Pets
Exercise 1
Exercise 2
Exercise 3
Unit 4 Computers
Exercise 1
Exercise 2
Exercise 3
Unit 5 The human brain
Exercise 1
Exercise 2
Exercise 3
Unit 6 Detectives
Exercise 1
Exercise 2
Exercise 3
Unit 7 Escaping from kidnappers
Exercise 1
Exercise 2
Exercise 3
参考答案