问题
选择题
-When did you become a volunteer fo
r the elderly?
-Two years ago. I ______ this group since then.[ ]
A. joined
B. took part in
C. have joined
D. have been in
答案
答案：D
搜题请搜索小程序“爱下问搜题”
-When did you become a volunteer for the elderly?
-Two years ago. I ______ this group since then.[ ]
A. joined
B. took part in
C. have joined
D. have been in
答案：D