When asked what they would volunteer to
问题:
When asked what they would volunteer to do, ________ said they were willing to do something they could.
A.half of these
B.half of which
C.half of whom
D.half of them
When asked what they would volunteer to do, ________ said they were willing to do something they could.
A.half of these
B.half of which
C.half of whom
D.half of them