Great changes ________ in the city and it ________ a new look.A.have been taken place, has taken onB.have taken place, have been taken onC.have taken place, has taken onD.have been taken place, has been taken on
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C解析【巧解导析】take place是不及物动词，无被动语态，故A，D不对．it(城市)与take on是主谓关系，故B不正确．