题目内容
________that the lights are turned off when you leave the classroom.
A.Make sure B.Be sure C.Make sure of D.Be sure of
A
make sure that意为“确保”,而be sure则是“一定”的意思。
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题目内容
________that the lights are turned off when you leave the classroom.
A.Make sure B.Be sure C.Make sure of D.Be sure of
A
make sure that意为“确保”,而be sure则是“一定”的意思。