问题
选择题
— What was it that caused the party to be put off?
— ______the invitations.
A．Because Tom delayed sending
B．Tom delayed to send
C．That Tom delayed sending
D．Tom delaying sending
答案
答案：C
考查句子的省略形式，根据句子结构可知，该句为主语从句的省略形式。完整为That Tom delayed sending the invitations caused the party to be put off.