问题

Whoever leaves the lab last, _____ all the lights are turned off.

A:make sure
B:make sure of
C:be sure
D:be sure of

正确答案是：

同类题型

Please go__________ this street and take the first turning on the right.

Look at the math book. Do you know ______ it might be

Manhattan, parts ofBrooklyn and Queens are blacked out, and people have no idea ___ it’s coming back on.

Mr Ma prefers _______ his dog after supper _______ him relaxed every day.

_______the party, we sang a song together.