---What caused the party to be postponed?
---- the invitations .
A. Tom to delay sending
B. Tom’s delaying sending
C. Tom delaying to send
D. Tom delayed to send
网友回答
A. Tom to delay sending
(答案→)B. Tom’s delaying sending
C. Tom delaying to send
D. Tom delayed to send
解析:句意为:--啥事导致了派对往后延迟呢
---汤姆迟迟没有发送邀请函
由对话可知,what在疑问句中做主语的成分,答语是针对what而言,用替换法,从语法角度讲,在此题中替代what只能是名词或代词,据此可排除A,D; B,D均为动名词,值得注意的是tom是delay逻辑上的主语,故要用其物主格的形式,故选B