Question

【题目】— What did you do last night, Bob?
—First I did my homework, and then I played ______ piano for half ______ hour.
A.the; a
B./; an
C.the; an
D.a; the

Answer 1

【答案】C
【解析】句意：——你昨晚做了什么，鲍勃? ——首先，我做了我的家庭作业，然后我弹了半小时的钢。根据语境piano（钢琴）是乐器类，其前必须用the修饰，half an hour （半小时）是固定搭配，所以答案是C。