The boy ___ is standing there is my brother.为什么答案选WHO 不用THAT

The boy is d___?___ h___?____. The boy ___ me is my borther. the boy is ___[watch] a ___[fun] cartoon now. The little boy is not ___ ___ ___look after himself. There ___ a parents' meeting this evening. A. will have B.will be C.is D.hasIs there a boy ___ at the door?A.stand B.standng C. stands D. is standing The boy is very polite的同义句The boy has ___ ___ There is a boy ( )at the door.A.stand B.standing C.stood D.is standing The boy is sitting on the table.用stand改成否定祈使句 Tony is the tallest boy ___ the three用介词 the boy ___(lie) on the beach is my brother This boy is Tom.Green(就划线部分提问) ___ ___ the boy The boy is ten years old.同义句改成He is ___ ___ ___. The boy's name is Tony.The ___ ___ the Tony.The boy's name is Tony.The ___ ___ the Tony. The boy is Bill.同义句转换The ___ ___ ___ Bill. Tom is ___ boy of the two in his family He is always ___(help) the little boy 要原因 the tall boy over there is my ___ brother.(old) What is the boy going to do at___ ___?