问题描述：
The company has spent a large sum of money______volunteers_______a volunteer manager.
A.advertising; as well as
B.advertising for; and
C.to advertise; as well as
D.to advertise for;and
A.advertising; as well as
B.advertising for; and
C.to advertise; as well as
D.to advertise for;and
问题解答：
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