His sister----watch TV.A.want to B.wants to C.want D.wants

His sister____watch TV。A。want to B。wants to C。want D。wants选BHis sister是第三人称单数形式,谓语动词要与之保持一致,只有选项B。wants to符合句意的选项,排除选项A。want to do sth是固定词组,所以,排除选项C和选项D。