单项选择题

This book has been in the works so long that I have lost ______ of most of the sources found for me by the staff of the library.

A．track
B．trail
C．trace
D．clue
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单项选择题
Just as robbery is a kind of crime, ______ gambling.
A．as it is
B．so is
C．the same as
D．and so is
单项选择题
The man ______ her answer without the slightest clue as to what she would say.
A．anticipated
B．previewed
C．foresaw
D．awaited
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