It's 11: 00 pm now, but the light in Peter's room is still on. He must have forgotten _______ before going to bed.
A：turn it on
B：to turn it on
C：turning it off
D：to turn it off
临江仙·寒柳
纳兰性德
飞絮飞花何处是，层冰积雪摧残，疏疏一树五更寒。爱他明月好，憔悴也相关。
最是繁丝摇落后，转教人忆春山。湔裙梦断续应难。西风多少恨，吹不散眉弯。
选择正确的一项 ( )
I have________ears.
