短文改错（共10小题；每小题1分，满分10分）
Yesterday afternoon I went to Yuexiu Park. It happens that I saw         76．_____________
a touched event. At that time, some people were boating on the lake.              77．_____________
Among whom was a happy family. They were taking photos                   78．_____________
while suddenly the girl fell off the boat into the water. She was                      79．_____________
struggling but her parents cried out, “Help! Help!” It was                       80．_____________
obviously that they could not swim at all. From nearby a young man        81．_____________
immediately rushed to the lake. Without taking off his clothes, he
jumped into water and quickly swam towards the girl, who was already   82．_____________
tired out. At last he carried her to the lake bank. She was saved!                     83．_____________
How happy the parent were! Before they thought                                84．_____________
thanking the young man, he had disappeared.                         85．_____________