单项选择题

The two scholars worked at the task of writing a preface to the new dictionary for three hours ______ last night.

A．at length
B．in full
C．on end
D．in time
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单项选择题
Mrs. Smith is afraid that she and her husband don't see ______ on New Year Resolutions.
A．face to face
B．eye to eye
C．back to back
D．heart to heart
单项选择题
On New Year's Eve, there will be a firework ______ at People's Square.
A．display
B．performance
C．show
D．exhibition
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