Unit 1 Welcome back! Unit 2 What are we going to do? Unit 3 Autumn festivals Unit 4 On the farm Unit 5 Shall we go to the zoo? Unit 6 Find the right place! Unit 7 Mainly Revision Unit 8 I was not here yesterday Unit 9 The memory robot Unit 10 The Swedish rock band Unit 11 Dates,months and seasons Unit 12 What’s the weather like? Unit 13 Come to the party! Unit 14 Mainly revision 答案与解析