选词填空，用适当的形式

sit , seven , minute , five , to , with , six , be , it , get , off , but , he , so , count

On morning an old man left his house with six donkeys. After a time,he( )tired and got on one of them ,He ( )the donkeys and there( )only five.So he got ( )and went to look for the ( ).He looked and looked,( )he did not find it , so he went back to the donkeys and counted ( )again.( )his surprise, this time there were six.( )he got on one of them again and they started .After a few( ),he counted the donkeys ahain,and again there were only ( )!He became confused, Just then a friend of ( )passed him .The old man said to him ,"I ldft my house( )six donkeys. Then I had five,then I had six again,and now I have only five!Look!One ,two,three,four,five.""But,"said his friend,"you are ( )on a donkey,too.This is the sixth.And you are the ( )!"

注意：
用适当的形式

On morning an old man left his house with six donkeys. After a time,he(was )tired and got on one of them ,He (counted )the donkeys and there(were )only five.So he got ( off)and went to look for the (sixth ).He looked and looked,(but )he did not find it , so he went back to the donkeys and counted (them )again.(To )his surprise, this time there were six.(So )he got on one of them again and they started .After a few(minutes ),he counted the donkeys ahain,and again there were only (five )!He became confused, Just then a friend of ( his)passed him .The old man said to him ,"I ldft my house( with )six donkeys. Then I had five,then I had six again,and now I have only five!Look!One ,two,three,four,five.""But,"said his friend,"you are (riding )on a donkey,too.This is the sixth.And you are the ( seventh)!"
ride这个词没提供，但是这个空用不上你给的任何一个词。

was
counted
were
off
sixth
but
them
To
So
minutes
five
his