摘要：Great changes in the countryside, and a lot of new houses . A. have been happened; have set up B. have taken place; have been set up C. have taken place; have built D. were taken place; were built
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Great changes ________ in the countryside, and a lot of new houses ________．
- A.have been happened; have set up
- B.have taken place; have been set up
- C.have taken place; have built
- D.were taken place; were built