make sure 确保 本身就是动词
be sure 用于主语后
I am sure
please ___ that you have closed all the window and turn off the lights before you leave the room.
please ___ that you have closed all the window and turn off the lights before you leave the room.
please ___ that you have closed all the window and turn off the lights before you leave the house.
A be sure B make sure C hold up D bring out为什么这里不能选A 只能选B?
please ___ that you have closed all the window and turn off the lights before you leave the house.
A be sure B make sure C hold up D bring out为什么这里不能选A 只能选B?
英语人气：680 ℃时间：2020-03-24 15:03:56
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