The stone hit the old man on the head这里的on the head为什么不能是on his head

The truth hit me like a stone between the eyes. Just now I threw a stone at a boy.The stone hit him on the head. The stone that hit me was as large as an egg.可以改为“The stone that hit me was about _ _ _an egg. someone threw a stone( )the speaker.it hit him( )the head and knocked his hat( ) hit the hit the hit the hit the hit the hit the 英语选择题While playing in the garden,_______A a stone hit meB a stone fell down upon my shoulderC my leg was heavily hit by a stoneD I was hit by a stone 选哪个 为啥 The stone hit the old man on the head这里的on the head为什么不能是on his head a door was looked a big stone came and hit the door上面是第一句 since the stone stone you are the stone fox hit the book.hit the spot The stone hit the dog A、in the head B、on the head C、in its head D、on its head . the man was hit on the head ___ a stone while traveling in the mountain a.with b.by为什么选b 不选a a 用.