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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
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解答
这道题主要考察“现在完成进行时”知识点，在家长帮App有相关的学而思名师精编考题，快去看看吧！
举一反三
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I letters since then, but I haven't finished them yet. [ ]A. have written
B. have been writing
C. wrote
D. has been writing -
—When_____ you_____teaching in our school, Mr. Smith?
—I_____here since 1998.
A. did, started; have been teaching
B. did, start; taught
C. did, start; have been teaching
D. have, been starting; taught -
完成下列同义句变化。 1. The film started fifteen minutes ago. The film has _______ for fifteen minutes.
2. To protect the environment is our duty. ____ is our duty ________ the environment.
3. I don't want to go to work. I'd rather stay at home. I'd rather stay at home ______ going to work.
4. With the help of the teacher, I found my lost watch. _______ the teacher, I found my lost watch.
5. Susan has been in this city for more than ten years. _____ more than ten years _______
Susan ________ to this city.
