Question

 We decide to make ________ a rule for us room-mates to turn off the lights at 10:30 pm.

A．that	B．this
C．it	D．one

Answer 1

C

试题分析：句意：我们决定把在晚上10:30关灯成为我们室友的一个规则。此处it做形式宾语，to turn off the lights at 10:30 pm作为真正的宾语。故选C。