Question

—What are you doing? —I'm     the key to the door.
A. finding out       B. looking after    C. looking for

Answer 1

C

詞義辨析題。Find out意為“找到”；look after意為“照顧”；look for意為“尋找”，根據句意可知“我在尋找門上的鑰匙”。