______ you like to say something aboutthe new product?
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I insisted that he ______ hand in hismarket plan this week.
A. have to
B. should
C. must
--- ______ you leave so soon?--- No, I ______.
A. Must;needn't
B. Must; mustn't
C. Dare; daren't
Her eyes are red. She ______ have beencrying.
A. must
B. would
C. ought to
在OS中配置了能保证数据一致性的软件,但产生数据不一致的根本原因是( )。
A. 数据存储量太大
B. 没有严格保护数据
C. 未对数据进行完整性控制
D. 数据冗余