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题目内容
（成都理工大学大学英语）
24.(单选题)Luckily,Mr Johnson saw ______ (本题3.0分)
A. what was happened
B. what is happened
C. what was happening
D. what is to happen
A. what was happened
B. what is happened
C. what was happening
D. what is to happen
参考答案