用所给单词的适当形式填空
Last Sunday, I {#blank#}1{#/blank#}（go）to
a shopping centre with my mum and dad. We {#blank#}2{#/blank#}（see）a small boy on the floor. He {#blank#}3{#/blank#}（look）sad. We helped him stand up. I {#blank#}4{#/blank#}（ask）him, "What's the matter?" He {#blank#}5{#/blank#}（say）," I can't find my mum." Dad {#blank#}6{#/blank#}（take）him to an office in the shopping centre. The boy's mum {#blank#}7{#/blank#}（is）there. The small boy {#blank#}8{#/blank#}（become）happy. I {#blank#}9{#/blank#}（be）happy, too.
