Is the old man (空格) grandfather?

The old man is walking（朝着）his grandfather ( )grandfather is the old man?A:Who's BWhose The old man ( ) small eyes is my grandfather. The old man is bill is grandfather 对bill is grandfather提问 The old man who is listening to the radio is my grandfather是 there is --- old man in --- house , ---man is my grandfather A:There is an old man [ ]by the river.Is he your grandfather Look!The old man ___(lie) on the chair is his grandfather. that,man,is,grandfather,old,Liu Mei's this ,my ,old,grandfather,man,is连词成句 ( )is the old man? ( )-____________is the old man over there?-My grandfather.A.