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题目内容
（平顶山学院-小学教育-大学英语2）
(单选题) ______ Lin Feng has to work late, she always wears a smile on her face.( )(本题2.0分)
A. Because
B. If
C. Until
D. Though
A. Because
B. If
C. Until
D. Though
参考答案
