—Tom must you have the light all night? It’s really a waste. —Sorry I won’t do it again

问题补充：

—Tom, must you have the light all night? It’s really a waste.

—Sorry, I won’t do it again.

A. burned

B. burning

C. to burn

D. to be burned

答案：

A. burned

(答案→)B. burning

C. to burn

D. to be burned

解析：句意：--汤姆，你必须让灯晚上一直亮着吗？太浪费了。--对不起，我以后不这样了。这里light与burn之间是主动关系，have sth doing使某物一直处于做……，故选B。