他一生致力于环境的改善。
A: He is devoted all his life to improving the environment.
B: He is devoted all his life to improve the environment.
C: He devoted all his life to improving the environment.
A: He is devoted all his life to improving the environment.
B: He is devoted all his life to improve the environment.
C: He devoted all his life to improving the environment.
举一反三
- He devoted all his life to ________the poor. A: help B: helping C: helped D: e help
- He was a world-famous scientist who ______ all his life to science. A: drove B: deleted C: devoted D: delivered
- Why has Jack no previous experience of volunteering? A: He devoted his time to improving his skills and gaining office experience. B: He devoted his time to helping others. C: He devoted his time to study. D: He devoted his time to his family.
- He has devoted his life to ____ the blind. A: help B: helped C: helping D: be help
- He has been devoted to his _____ all his life. A: employment B: career C: profession D: work