One’s life has value ________ one brings value to the life of others.(2012·江苏，30)

To keep healthy,Professor Johnson ________ cycling as a regular form of exercise after he retired.[ ]

is body and soul to bringingup-to-date technology and international attention to China’s Aids problem,DrDavid Ho , born in Taiwan, spent little time with his family

Have you heard that Tom was given a good beating by his father last night— He ________ it. He was making trouble everywhere all the time.

I_________the hobby of fishing as a child.