2. nối cột A với cốt B
A B
1. polluted a. son-renewable
2.winlimited b. dirty
3.reneivable c. decreasing
4.cheap d. dangerous
5. safe e .impossible
6. plentiful j. slow
7. increasing g. expensive
8. rapid i. limited
9. friendly j. aupolluted
10. possible k . umfriendly
11. clean h . exhousted