题目内容

根据句意及汉语提示完成句子
1. There is but one______(步骤)from the right to the wrong.
2. Do you want to be a_______(英雄)in the future?
3. Passengers, attention  please!_______(航班)No. CA149 will take off,please go to Gate 8.
4. All pilots are_______(负责的)for their passengers' safety.
1. step  2. hero  3. Flight  4. responsible
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