B组
8. He made up his mind to devote his life to_____ pollution to live happily.
A. prevent B. preventing C. be preventing D. be prevented
9. The research he devoted to ______completed.
A. was B. be C. being D. having
10. Mrs. Brown was much disappointed to see the washing machine she had had ______went wrong again.
A. repaired B. repaired it C. it repaired D. to be repaired
