问题补充：
I want to watch TV. Please .
A. turn it on
B. turn on it
C. turn it off
D. turn off it
答案：
(答案→)A. turn it on
B. turn on it
C. turn it off
D. turn off it
解析：句意：我想看电视。请打开电视。turn on 打开；turn off关上。当代词做动词短语的宾语时，位于动词和介词之间，故排除BD两项。根据I want to watch TV可知此处要打开电视，故选A。
