问题详情:
--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
【回答】
D
知识点:动词时态
题型:选择题
问题详情:
--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
【回答】
D
知识点:动词时态
题型:选择题