A与D选项的区别 The spokesman was seated in front of all the audience at the conferen...A与D选项的区别 The spokesman was seated in front of all the audience at the conference ______ to answer all kinds of questions.A.prepared B.preparingC.

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A与D选项的区别 The spokesman was seated in front of all the audience at the conferen...A与D选项的区别 The spokesman was seated in front of all the audience at the conference ______ to answer all kinds of questions.A.prepared B.preparingC.
A与D选项的区别 The spokesman was seated in front of all the audience at the conferen...
A与D选项的区别 The spokesman was seated in front of all the audience at the conference ______ to answer all kinds of questions.
A.prepared B.preparing
C.to be prepared D.having prepared

A与D选项的区别 The spokesman was seated in front of all the audience at the conferen...A与D选项的区别 The spokesman was seated in front of all the audience at the conference ______ to answer all kinds of questions.A.prepared B.preparingC.
D
理由 全句的主语是The spokesman ,和非谓语动词prepare之间应当是主动关系,因此排除
A、C; 又因为准备工作应当在就坐之前,所以用having done结构.

C.to be prepared ：不定式的被动式（一般式）， 表目的，表将来
D.having prepared：现在分词表达式，表完成

感觉答案是B项，
区别麻：
preparing 为动名词，相对于名词
to be prepared 为不定式，相对于动词，而且还是被动式

D选项压根就是个错误的选项
having prepared是什么时态呢
要么have要么has

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