To make our city more beautiful, we throw rubbish into the river. A. needn’t B. mustn’t——青夏教育精英家教网—

摘要： To make our city more beautiful, we throw rubbish into the river. A. needn’t B. mustn’t C. must D. may

网址：http://m.1010jiajiao.com/timu_id_2282037[举报]

To make our city more beautiful, we must remember that rubbish ________ into the river.