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题型：单选题 题类：常考题 难易度：容易
冀教版初中英语七年级下册Unit 7 Lesson 42 Know Yourself 同步练习
My father {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} till twelve last night.
—Twice a week.
It's difficult for me to {#blank#}1{#/blank#} {#blank#}2{#/blank#} the math problem.
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