阅读下面的短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。
Once upon a time, there was {#blank#}1{#/blank#} man
called Yu Gong. Yu Gong and his family began {#blank#}2{#/blank#} (move) some of the earth
and stones to the sea. One day, a man saw Yu Gong and {#blank#}3{#/blank#} (he) children working
on the mountains. He told Yu Gong he could never {#blank#}4{#/blank#} (do) it because he
was old and weak. As soon as the man finished {#blank#}5{#/blank#} (talk), Yu Gong said
that his family could continue moving the mountains. His family would live and grow
{#blank#}6{#/blank#} the mountains could not get bigger. Yu Gong and his family kept on {#blank#}7{#/blank#}
(work) day after day and year {#blank#}8{#/blank#} year. {#blank#}9{#/blank#} (final), a god was moved by
Yu Gong, so he {#blank#}10{#/blank#} (send) two gods to move the mountains. This story tells
us that you can never know what's possible unless you try to make it happen.
