Whendidyoubecomeavolunteer?Twoyearsa
| When did you become a volunteer? Two years ago. I _____this group since then. |
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| A. have joined in B. have taken part in C. have been in D. have been to |
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| 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 |