please make sure youPlease make sure you _________ the door before leaving the room.A.lock B.will lock C.should lock D.must lock选什么？为什么？
问题描述：
please make sure you
Please make sure you _________ the door before leaving the room.
A.lock B.will lock C.should lock D.must lock
选什么？
为什么？
答
A
答
选A
make sure sb do sth 确保某人做某事（祈使句 做提醒人的意图）