单项选择题

A．for
B．in
C．up
D．on
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单项选择题
A．MoreoverB．UnlessC．HoweverD．Although
A．Moreover
B．Unless
C．However
D．Although
单项选择题
A．responsibilitiesB．commissionsC．missionsD．venture
A．responsibilities
B．commissions
C．missions
D．venture
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