单项选择题

Those factories use (both) chemical (or) mechanical (methods) (to manufacture) clear glue.

A．both
B．or
C．methods
D．to manufacture
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The growth (of) part-time and flexible working patterns (allow) more women (to) (take) advantage of employment opportunities.
A．of
B．allow
C．to
D．take
单项选择题
They sat (together) (to make) (a room) (for) an old lady.
A．together
B．to make
C．a room
D．for
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