1 Teacher's Day 1
2 The sports meeting 22
3 A good teacher 44
4 What are they doing？ 61
5 The accident 78
6 In the library 95
7 Mainly revision 111
8 On the farm 127
9 A visit to a factory 144
10 Mr.Green's problem 163
11 A great inventor 181
12 Have a good time,Jim! 197
13 Merry Christmas! 216
14 Mainly revision 234
15 At home with the twins 250
16 What's it made of？ 268
17 What was it used for？ 285
18 Planting trees 302
19 Mainly revision 320
20 The world's population 338
21 Shopping 355
22 At the doctor's 372
23 The football match 388
24 Mainly revision 405
Revision exercises 420