To make our country more beautiful, rubbish _____ into the river. A. needn’t be thrown B. mustn’t be thrown C. can’t throw D. may not throw
A.A
B.B
C.C
D.D
正确答案是B
To make our country more beautiful, rubbish _____ into the river. A. needn’t be thrown B. mustn’t be thrown C. can’t throw D. may not throw
A.A
B.B
C.C
D.D
正确答案是B