短文改错(共10小题；每小题1分，满分10分)
请对每一行作出判断，如无错误，在该行右边横线上划一个√，如有错误，按照改错的方法改，请将答案写在答题卡上。
Once an old man saw a bag on his way to home.                             76. _______
In the bag there was a wolf. It was catching and put in                 77. _______
the bag by a shepherd（牧羊人） a few minutes ago.
The wolf asked the old man to let him out.                                 78. _______
The old man took pity on him and opened bag.                             79. _______
When the wolf got out， said to the old man， "I am very hungry.  80. _______
I want to eat you." The other old man could do nothing                  81. _______
and cry for help. Just then the shepherd came and saw this.            82. _______
He beat the wolf to death by a stick. Then he said to the                83. _______
old man， "wolves want to eat men all the time. It's nature            84. _______
will never change. We should took this as a good lesson."             85. ______