—What you? —I’m of being left alone in the house.A. terrify terrifiedB. terrified terr

问题补充：

—What you?

—I’m of being left alone in the house.

A. terrify, terrified

B. terrified, terrifying

C. terrifies, terrified

D. terrifies, terrifying

答案：

A. terrify, terrified

B. terrified, terrifying

(答案→)C. terrifies, terrified

D. terrifies, terrifying

解析：句意:-什么东西吓到了你？-我害怕被一个人留在家里。terrify 是一个动词，后面可直接跟人来做宾语，“使某人害怕”；他的形容词是terrified 或terrifying ，前者修饰人，后者修饰物。且be terrified of 是一个固定短语，害怕…。故选C。