—I’m leaving now.— you turn off the lights.A. To make sureB. Make sureC. Made sureD. Maki

问题补充：

—I’m leaving now.

— you turn off the lights.

A. To make sure

B. Make sure

C. Made sure

D. Making sure

答案：

A. To make sure

(答案→)B. Make sure

C. Made sure

D. Making sure

解析：该句是祈使句，谓语动词用原形，故选B。