阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答卷标号为1-10的相应位置上。
Once there lived a rich man __1_ wanted to do something for the people of his town. _2__ first he wanted to find out whether they deserved his help.
In the centre of the main road into the town, he placed __3__ very large stone. Then he __4__(hide) behind a tree and waited. Soon an old man came along with his cow.
“Who put this stone in the centre of the road？” said the old man，but he did not try to remove the stone. Instead, with some difficulty he passed around the stone and continued on his way. __5__ man came along and did the same thing; then another came, and another. All of them complained about the stone but not tried to remove 6_. Late in the afternoon a young man came along. He saw the stone，_7__(say) to himself: “The night _8_(be) very dark. Some neighbors will come along later in the dark and will fall against the stone.”
Then he began to move the stone. He pushed and pulled with all his 9__(strong) to move it，only __10__(find) a bag of money under the stone. Imagine how surprised he was!