问题补充:
.Great changesin the city and a lot of factories.
A. have been taken place…have been set up
B. have taken place…have been set up
C. have taken place…have set up
D. were taken place…were set up
答案:
(答案→)A. have been taken place…have been set up
B. have taken place…have been set up
C. have taken place…have set up
D. were taken place…were set up
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