第三课时第一题答案
1 | 2 | 3 | 4 | 5 |
B | B | B | A | B |
第三课时第二题答案
having, city, makes, factories, air, Rubbish, messy, many, keep
第三课时第三题答案
1. keep, is cleaning, sweeping
2. to make
3. puts
4. him
5. shops
6. pick, throw
第三课时第四题答案
1. Do you throw rubbish in the bin? Yes, I do.
2. We can go to school on foot.
3. There is a museum in the city.
4. What can you do to keep your school clean?
5. Smoke from cars makes the air dirty.
第三课时第五题答案
1 | 2 | 3 | 4 | 5 |
F | F | T | F | T |