The old man is sure to live __ninety yesrs old.这个空填 to be 还是填to 可是真确答案是选to be 我不清楚其中的所以然

( )is the old man? ( )is the old man? Who is the old man? the old man is ___for the beach the old man is（ ninety years old?） 提问 （）（ ）is the old man The old man in the car is an old teacher. Is the old man (空格) grandfather? The old man is ___ ill .( terrible) Look!The old man is e____. Old man is the twice of Is the old man a____or dead? The young man is behind the old man. old how is the man old连词成句 The old man is too old to word.(同义句) The old man is an ice-cream man.是什么意思. The old man is healthy（改为同义句） The old man is ( ) （ ) ( ). The man who promises everything is sure to fulfill nothing what does the old man doing?和what is the old man doing?哪句正确?