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题型：单选题 题类：常考题 难易度：容易
——Not yet. He ________ on it last night.
She {#blank#}1{#/blank#} {#blank#}2{#/blank#} apples in the garden when I {#blank#}3{#/blank#} her yesterday.
Students were {#blank#}1{#/blank#} the robots at this time yesterday.
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