---What caused the party to be put off?
--- the invitations.
A. Tom delayed sending
B. Tom’s delaying sending
C. Tom delaying to send
D. Tom delayed to send
网友回答
A. Tom delayed sending
(答案→)B. Tom’s delaying sending
C. Tom delaying to send
D. Tom delayed to send
解析：考查动名词做主语的用法：问句是：什么导致会议被推迟的？回答应该是主语的内容，回答是省略式，完整的句子是：Tom’s delaying sending caused the party to be put off。Tom’s是逻辑主语，delay后面接动名词，选B。
考点; 考查动名词作主语