40. (单选题) – You are working hard, what are you doing? – (本题1.0分) A、 No, not at all. B、 I’m making a bookcase. C、 Yes, I really work hard. D、 Thanks.

40. (单选题) – You are working hard, what are you doing? – (本题1.0分)
A、 No, not at all.
B、 I’m making a bookcase.
C、 Yes, I really work hard.
D、 Thanks.

出自：河北建筑工程学院-大学英语2（高起专）

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