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.
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He _______ to study harder in the future so that he could have more opportunities to find a better job.
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He tried to _____ __relations with his former wife but he failed.
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Much of the news provided by this newspaper is_______, not foreign.
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The doctors _______ the medicines to the people in the flood area.
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We are _______ at the rapid progress Mark has made in this semester.
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She is already 16years old. But she _______as if she were still a little girl.
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This river forms a natural _______ between China and Korea.
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When a spacecraft travels, one of the major problems is reentry into the Earth ’s _______.
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In order to increase our output, we need to import more production _______.