单项选择题

Old Mr. Brown's condition looks very serious and it is doubtful if he will ______.

A．pull off
B．pull up
C．pull through
D．pull out
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单项选择题
The physician had to visit his patient six ______ days before the patient could be considered in a fair condition.
A．consequent
B．consecutive
C．consistent
D．conservative
单项选择题
Don't throw ______ the sponge yet! You may still have a chance to win!
A．by
B．in
C．on
D．for
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