单项选择题

The students must hand in their essays in a week, No, they ______

A. needn't they.., mustn't

B. mustn't they.., mustn't
C. mustn't they.., needn't

D. shouldn't they.., should
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单项选择题
Your story about the frog turning into a prince is ______ nonsense.
A. shear
B. sheet
C. shield
D. sheer
单项选择题
In spite of the ______ economic forecast, manufacturing output has risen slightly.
A. gloomy
B. dizzy
C. opaque
D. faint
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