题海让大学四年没有难题
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单选题 Section ADirections: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A, B, C and D.21. You can't hear what I'm saying _____ you stop talking

A. only if

B. unless

C. lest

D. except that

大学英语(第二册)第6期课程封面

学科:大学英语(第二册)第6期

时间:2025-05-05 10:38:46

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