What caused the party to be put off?—— ______ the invitations.A.Tom delayed sending B.Tom’s delaying sending 请问为什么是B

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What caused the party to be put off?—— ______ the invitations.A.Tom delayed sending B.Tom’s delaying sending 请问为什么是B
What caused the party to be put off?—
— ______ the invitations.A.Tom delayed sending B.Tom’s delaying sending
请问为什么是B

What caused the party to be put off?—— ______ the invitations.A.Tom delayed sending B.Tom’s delaying sending 请问为什么是B
作解释的原因——指what,只能是名词性短语
A 有主谓宾,诗歌完整的句子

选项B是动名词形式,这个词组是起名词的作用
A项的语法也不对,delayed是过去式,后面不能接进行时态的词,也不能接动名词。

应用一个名词性短语来回答,所以选B