题目内容：

Make sure that you all the doors and windows before you leave the building.
A.fasten
B.tie
C.draw
D.match

优质解答

Make sure that you _______all the doors and windows when you leave the room.
A.will shut B.would shut C.shut D.have shut
选择 c
在短语make sure,see (to) it,be sure后接从句,通常用一般现在时表将来