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题目内容
（国家开放大学-理工英语3）
_______ had the bell rung _______ the students took their seats.
单选题 (10 分) 10分
A.
Hardly;when
B.
No sooner;when
C.
Hardly;than
单选题 (10 分) 10分
A.
Hardly;when
B.
No sooner;when
C.
Hardly;than
参考答案
