. A volunteer is a person willing to hel
题型:选择题
问题:
.
A volunteer is a person willing to help others, one who offers to do something without__________.
A.paying
B.paid
C.being paid
D.to pay
.
A volunteer is a person willing to help others, one who offers to do something without__________.
A.paying
B.paid
C.being paid
D.to pay