The girl ____ is singing is Tom's sister.A:which B:that C:who D:whom该选哪个?为什么?

The American girl's ____ is Amy. The girl ____ red is my cousin. The girl is blind.同义句转换The girl ____ ____ ____ see anything . The girl is piaying the piano.(改为否定）The girl ____ ____ the piano 英语翻译The little girl is ___ ____ ____ pop music. The girl is good at dancing.（改同义句）The girl ____ ____ ____dancing. the girl is d ____ .And her mother is watching the pretty girl is 18 years old 同义句 she is ___ ____ girl.the pretty girl is 18 years old 同义句she is ___ ____ girl. The girl is afaid of ____(swim) in the water the question is too hard for the girl ____(anwaer) Is the girl good at dancing?改为同义句 ____the girl ____ ____ _____dancing? There is a girl ____ the guitar over there(play) The girl ____(call) Mary is my classmate Who ____(babysit) the little girl?His father is. The little girl is ____ ___the big dog the girl ____ a red shirt is good at running Who is the girl waiting ____（用介词）? The girl is old enough ____(make) her bed.