--- Look! Mary is sleeping.--- Why not _______

试题详情及答案解析

--- Look! Mary is sleeping.
--- Why not ________ the TV and close the door for her?

A．to turn off	B．turn off
C．turned off	D．turning off

答案：B

试题分析：句意：―看！玛丽在睡觉。－为什么不把电视关掉并为她关上门呢？Why not后面要加动词原形，所以选B。
考点：考查动词的用法。