She only watches them __________ TV.[ ]

Don’t worry about your grandmother, All the old people in China now.

I like playingbasketball and playingerhu.

Jim, who taught ________Chinese before you came to school?—Nobody. I learned it by _______.

Mary, could you tell me if your mother _____ our school sports meeting tomorrow? –I think she will come to school if she _____ free.