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题型：单选题 题类：模拟题 难易度：普通
-- I'll a list of the things to buy.
My sister started to learn to dance {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} five.
His father works {#blank#}1{#/blank#} {#blank#}2{#/blank#} and all night.
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