试题 试卷
题型：单选题 题类：常考题 难易度：普通
外研（新标准）版2019-2020学年初中英语七年级上册Module 3 Unit 1 There are thirty students in my class.同步练习
— It's really big.
— Sorry, we don't have any.
— _____
—______．There might be heavy pollution．
— .
—________
—___________.
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