单项选择题

Every minute must be made full use ______ at the preparations for the exams.

A．of to work
B．of work
C．of working
D．to working
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单项选择题
The new student dare not speak in class. Nor ______ to raise any questions.
A．he dare
B．dare he
C．does he dare
D．dares he
单项选择题
Up ______ when the country declared war on its neighboring country.
A．the oil prices went
B．went the oil prices
C．did the oil prices go
D．would the oil prices go
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