Uponarrivinghome，IwassurprisedtofindthepaperIhadhad

问题详情：

Upon arriving home，I was surprised to find the paper I had had ________ was missing.

A．to be prepared  B．to prepare

C．preparing  D．prepared

【回答】

D　[考查非谓语动词。句意：我一到家就惊奇地发现我事先让人准备的文件不见了。(that/which)I had had prepared是定语从句，修饰先行词the paper，从句中含有一个have sth done 结构，表示“让别人做某事”。]

知识点：非谓语动词

题型：选择题