摘要： He waited with his companion the rescuers came, and then helped them carry her back down the mountain. A. when B. until C. unless D. while
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He waited with his companion_________the rescuers came, and then helped them carry her back down the mountain.
- A.when
- B.until
- C.unless
- D.while
He waited with his companion_________the rescuers came, and then helped them carry her back down the mountain.
A. when B. until C. unless D. while
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