问题描述：
1.Everyone must keep_____(safe)rules when they use fire just in case there is a fire.
2.At the______(enter)of the department store,I happened to meet my former classmate.
3.The peopleare standing at the airport nervously,looking forward to the______of the new airplane.
第三题的提示词是fly
2.At the______(enter)of the department store,I happened to meet my former classmate.
3.The peopleare standing at the airport nervously,looking forward to the______of the new airplane.
第三题的提示词是fly
问题解答：
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