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共 21 道题 · 小初高全学科全版本
英语
小学 · 四年级
沪教版
单选题
★★☆☆☆
My parents ___ the classroom every day last week.
A. were cleaning
B. cleaned
C. would clean
D. had cleaned
四年级上册 · 动词的时态 · 一般过去时
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