题目内容
7. you turn off all the lights when you leave the classroom.( )A. | Making sure | B. | To make sure | C. | Being sure | D. | Make sure |
分析 当你离开教室时确保你关了所有的灯.
解答 答案是D.题干是祈使句,构成是:动词原形+其他.所以答案是D.
点评 解答此类问题,首先需要判断题干所属的句型,然后结合句子所缺成分和句型构成选择正确答案.
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