单项选择题

I don't recollect ______ her cry in public before.

A. to see
B. having seen
C. to watch
D. watch
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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
单项选择题
To ensure maximal voter participation in a presidential election, thorough planning and a voter registration ______ are usually required.
A. collocation
B. investigation
C. drive
D. confinement
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