题型：单选题题类：常考题难易度：普通

北师大版英语九年级全册 Unit 4 Space 单元测试卷

The workers in the Huashan Mountains have to rubbish to keep the mountains clean.

A、turn up B、pick up C、mix up D、give up

举一反三

—She came here to remind me of my mother's birthday.

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