题目内容
( B ) 22. 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
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灵星计算小达人系列答案题目内容
( B ) 22. 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
灵星计算小达人系列答案