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题型：单选题 题类：常考题 难易度：普通
人教精通版（三起点）2018-2019学年小学英语三年级下册Unit 1 Lesson 5同步练习 （暂无听力音频）
—It's a .
A. It's dangerous to climb the fence.
B. Please look after your dog.
C. Don't eat on the subway.
D. You shouldn't talk loudly in public places.
A. Good afternoon, Mummy.
B. Goodbye, Daddy.
C. Hi, Jack.
D. Good morning, Mummy.
— _______________
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