It is a pity that I missed the chance to get the signature of my favourite sports star, Liu Xiang ________.[ ]

Remember to _____ the lights when you leave a room.

The teenagers wonder ______ makes Jay a successful pop singer. [ ]

Mom, I have too many after-school classes. Some are really unnecessary.—I get it. I will . See, I am an understanding mom.

________ the girls enjoy ________ TV. –Yes，they ________.