题目内容
完成句子
________(一旦发生火灾), open this safety door and ring the alarm bell.(case)
答案:
解析:
解析:
|
In case of fire(In case a fire breaks out) |
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题目内容
完成句子
________(一旦发生火灾), open this safety door and ring the alarm bell.(case)
|
In case of fire(In case a fire breaks out) |