leaves the room last ought to turn off the lights.A. Anyone 　B. The personC. WhoeverD. Who

问题补充：

leaves the room last ought to turn off the lights.

A. Anyone

B. The person

C. Whoever

D. Who

答案：

A. Anyone

B. The person

(答案→)C. Whoever

D. Who

解析：句意：不管是谁最后离开房间都应该把灯关上。A任何人B这个人C无论谁D谁。leaves the room last是一个主语从句。whoever 的含义是:the person who... 或anyone who... [无论(不管)是谁]，who虽然也可以引导主语从句，但它常保留本身疑问的含义，即“谁”。