单项选择题

A great many cancers can be cured but only if ______ before they have begun to spread or 'colonize' in other parts of the body.

A．properly treat
B．properly treating
C．being properly treated
D．properly treated
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单项选择题
Would you be ______ kind as to step this way please
A．as
B．so
C．very
D．too
单项选择题
Many fruit juices are now available in ______ aluminium cans.
A．indispensable
B．smooth
C．handy
D．soft
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