阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
An American boy went {#blank#}1{#/blank#}(miss) three days ago,
{#blank#}2{#/blank#} has received people' great interest. Several people gave different
descriptions of his {#blank#}3{#/blank#}(disappear).
His sister, {#blank#}4{#/blank#}(age) nine, says she heard her brother
{#blank#}5{#/blank#}(return) home at about 11p.m. When she went to bed, she was frightened
at lots of strange creatures {#blank#}6{#/blank#}(stand) inside a spaceship outside.
She is sure the aliens took her brother.
His parents became worried and called the police when their son
didn't show {#blank#}7{#/blank#} for lunch the next day.
Some people also say that aliens took one of them aboard the
UFO so that they could do research on her. {#blank#}8{#/blank#}(luck), she returned
safely.
When {#blank#}9{#/blank#} (ask) about the possibility that the boy was
taken by aliens, the police say {#blank#}10{#/blank#}they haven't dismissed the idea, they
will not give up until they find out what happened.