--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
--When did you become a volunteer for the elderly?-- Two years ago. I this group since th
答案:2 悬赏:30 手机版
解决时间 2021-12-19 06:06
- 提问者网友：浪荡绅士
- 2021-12-19 01:39
最佳答案
- 五星知识达人网友：忘川信使
- 2021-12-19 03:11
A. joinedB. took part inC. have joined(答案→)D. have been in解析：由“since then”可知，此句时态为现在完成时，故排除AB，又因为join为非延续性动词不可与现在完成时连用，排除C，故选D
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- 1楼网友：思契十里
- 2021-12-19 04:39
谢谢了
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