--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 |
相关试题
--Do you think students should be allowed to do their homework with music on?
-- . If so, they can't concentrate on the study.
| A．1 agree | B．1 think so | C．I disagree | D．I have no idea. |
-- Hello, this is Jack. Mary I speak to Tom?
-- Sorry, he isn't in at the moment. If he back, I'II ask him to call you back.
| A．come | B．comes | C．have come | D．came |
volunteers are working for 2014 International Horticulture Exposition in Qingdao.
| A．Thousands of | B．Two thousands | C．Thousand | D．Two thousands of |
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