To make our city more beautiful, rubbish into the river. [ ]A. needn't be thrown B. mustn'

题目简介

To make our city more beautiful, rubbish into the river. [ ]A. needn't be thrown B. mustn'

题目详情

To make our city more beautiful, rubbish            into the river.
[     ]
A. needn't be thrown
B. mustn't be thrown
C. can't throw
D. may not throw
题型:单选题难度:中档来源:同步题

答案

B

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