单项选择题

These young people have much to be dissatisfied with, and they sometimes do______, but on the whole they study hard, knowing the problems the states is facing.

A．grumble
B．frustrate
C．frown
D．perplex
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单项选择题
Travelers had better get their reservations well______ if they want to fly during the Christmas holidays.
A．in advance
B．in hand
C．in place
D．in case
单项选择题
No longer are contributions to computer technology confined to any one country,______ is this more true than in Europe.
A．Hardly
B．Little
C．Seldom
D．Nowhere
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