Question

【题目】--What is the man who wears a pair of glasses doing?

--He is busy his key to the door.

A.looking forB.to look forC.looking upD.to look up

Answer 1

【答案】A

【解析】

句意：—戴眼镜的那个人在干什么?—他正忙着找他的钥匙。

考查动词短语及动词形式辨析。be busy doing sth.忙于做某事，固定结构，可排除BD两项。look for寻找，look up查阅；根据下文his key to the door可知look for his key符合句意，故选A。