摘要： -When did you a at the Beijing Station? -At about seven in the morning.
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--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 |
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--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 |
查看习题详情和答案>>
--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 |
查看习题详情和答案>>