单项选择题

Now that she is sick with cold, I feel I ______ have stopped her from going out in the rain,

A．could
B．might
C．must
D．ought to
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单项选择题
______ we had expected, the size of the audience was well over one thousand.
A．That
B．Which
C．As
D．It
单项选择题
The man shot the bird ______ a gun.
A．by
B．in
C．with
D．through
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