The environment is being changed in all aspects, which has ...............in serious consequences.
| 1 A. in | B. for | C. with | D. about |
| 2 A. make | B. to make | C. making | D. how to make |
| 3 A. to | B. of | C. for | D. about |
| 4 A. place | B. placed | C. have placed | D. had placed |
| 5 A. to teach | B. teaching | C. how to teach | D. being taught |
| 6 A. established | B. is establishing | C. has established | D. had established |
| 7 A. easier | B. easily | C. more easily | D. much easier |
| 8 A. much | B. higher | C. farther | D. further |
| 9 A. what | B. how | C. when | D. how much |
| 10 A. a | B. an | C. any | D. the |