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题型:单选题 题类:常考题 难易度:普通
- Sorry, I didn't hear it. I _________ up the phone.
Did you hear that Bill{#blank#}1{#/blank#} {#blank#}2{#/blank#}the piano?
— Oh, sorry! We {#blank#}2{#/blank#}(do) some shopping in the supermarket at that time.
He {#blank#}1{#/blank#} and waiting for help when the accident happened.
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