试题 试卷
题型：语法填空（单句） 题类：常考题 难易度：普通
山东省曲阜师范大学附属中学2016-2017学年高一下学期英语期末考试试卷
— Really? But it may cause a lot of trouble sometimes.
To prevent fire, {#blank#}1{#/blank#}you switch off all the electrical equipment when you leave the room.
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} he has learned from his mistakes.
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