D 是have taken place,因为take place 是不及物动词,没有被动语态形式
the visitors are very____to see that so many changes____in o
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选哪个 .C.D 纠结The visitors are very ______ to see so many chang
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以There are many inventions that have causde great changes in
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The film is so ______ that all of us are very ______ in it.&
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