试题 试卷
题型:单选题 题类:真题 难易度:容易
— I can't remember. I attended a concert yesterday so it still be in the music hall.
— Where can it be?
— It {#blank#}1{#/blank#} be in your pocket.
—Sorry, I didn't notice that sign just now.
—I'm sorry. Children _____ swim here.
—Sorry, I do it again.
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