单项选择题

If you have any comment about these clauses, do not hesitate ( ).

A．make
B．making
C．being made
D．to make
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单项选择题
It is said that a new policy is being put( )practice in your foreign trade.
A．on
B．into
C．under
D．with
单项选择题
C.O.means ( )of origin
A．certificate
B．currency
C．container
D．catalogue
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