解析：______ is often the case with a ne_考试试题_四六级

【单选题】 ______ is often the case with a new idea, much preliminary activity and optimistic discussion produced no concrete proposals.
A．That
B．It
C．This
D．As

网考网参考答案：D
网考网解析：
分析句子结构，中白处应是连词，所以首先排除B和C。但that不能引导非限制性定语从句，所以答案是D。查看试题解析出处>>