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13、_______ you turn off all the lights when you are away from the classroom .

A.Making sure            B.To make sure          C.Being sure        D.Make sure

13、D

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       you turn off all the lights when you are away from the classroom.

       A.Making sure        B.To make sure      C.Being sure          D.Make sure

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科目:高中英语 来源: 题型:

_______ you turn off all the lights when you are away from the classroom .

A.Making sure            B.To make sure          C.Being sure        D.Make sure

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