问题
选择题
—How long has the nationwide ban (禁止) on plastic bags been put into practice?
－_____ the beginning of June.[ ]
A. Behind
B. Since
C. Among
D. At
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—How long has the nationwide ban (禁止) on plastic bags been put into practice?
－_____ the beginning of June.[ ]
A. Behind
B. Since
C. Among
D. At
答案：B