- After working for twenty hours without any rest, the doctors were _______.
- Free medical service is _______ to nearly all the college students in China.
- Pine trees are usually believed to _______ cold weather.
- The engineers in this lab spent several weeks _______their plans for the new bicycle.
- Many kinds of animals are believed to have _________from the earth
- The _______ work continued for more than a week but there was still no sign of the missing boy.
- He _______ to study harder in the future so that he could have more opportunities to find a better job.
- He tried to _____ __relations with his former wife but he failed.
- Much of the news provided by this newspaper is_______, not foreign.
- The doctors _______ the medicines to the people in the flood area.
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