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题目内容
（大连工业大学-大学英语3）
(单选题) -What did you do last night,Bob?
-First I did my homework,and then I played ______ piano for half ______ hour.(本题2.0分)
A、 the；a
B、 /；an
C、 the；an
D、 a；the
-First I did my homework,and then I played ______ piano for half ______ hour.(本题2.0分)
A、 the；a
B、 /；an
C、 the；an
D、 a；the
参考答案