III.
1. C join
2. A how
3. D indoor
4. A at
5. C scoring
6. C at
7. C exciting
8. B catching
9. B in a week
10. B geography
11. A do
12, A literature
13. C outdoor
14 D skipping
15 D in
16 B most common
17 B with
18 A I play sports after school
19 C noisy
20 B She learns experiment
IV.
1B Do not walk on the grass
2D Use little liquid soap to wash your hand