A-A+
As ______announced in today' s papers the Sha
问题详情
As ______announced in today" s papers, the Shanghai Export Commodities Fair is also open on Sundays.
A．being
B．is
C．to be
D．been请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：as可用作关系代词，引导定语从句，起承接前面主句的内容或引出后续主句的内容的作用，as在从句中作主语或宾语，指代整个主句。有时，助动词be可以省略
