题目内容：

There is a meeting _______ in the hall behind the teaching building this afternoon
A.to be held B.held C.holding D.will be held

优质解答

A to be held
首先确定是被动语态 排除C
再确定是非谓语 （is已经是谓语了） 排除D
根据this afternoon知道是将来时态 排除B
A 是不定式表将来
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