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题目内容
（兰州理工大学-软件技术-大学英语1）
____________ , I found all the seats were taken
A．To enter the classroom
B．Entered the classroom
C．Entering the classroom
D．To be entered the classroom
A．To enter the classroom
B．Entered the classroom
C．Entering the classroom
D．To be entered the classroom
参考答案
