We ________ pick up the rubbish and keep the environment clean. A. may B. can C. should D. could
2022-09-21 13:06:25 176次 天津市津南区2019届九年级学业水平考试模拟英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
We ________ pick up the rubbish and keep the environment clean.
A. may B. can C. should D. could
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