— When did you become a volunteer? — Two
题型:选择题
问题:
— When did you become a volunteer?
— Two years ago. I _____this group since then.[ ]
A. have joined in
B. have taken part in
C. have been in
D. have been to
— When did you become a volunteer?
— Two years ago. I _____this group since then.[ ]
A. have joined in
B. have taken part in
C. have been in
D. have been to