Unit 1 What's the matter?
Section A(1a~2d)
Section A(3a~4c)
Section B(1a~2e)
Section B(3a~Self Check)
Unit 1质量监测卷
Unit 2 I'll help to clean up the city parks.
Section A(1a~2d)
Section A(3a~4c)
Section B(1a~2e)
Section B(3a~Self Check)
Unit 2质量监测卷
Unit 3 Could you please clean your room?
Section A(1a~2d)
Section A(3a~4c)
Section B(1a~2e)
Section B(3a~Self Check)
Unit 3质量监测卷
……