It took only one year or so to get a railway station___________in this city,which is about half the average time it took in some other cities.A being builtB to be builtC builtD build前面是过去时,说明已建完,为何用to do?

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It took only one year or so to get a railway station___________in this city,which is about half the average time it took in some other cities.
A being built
B to be built
C built
D build
前面是过去时,说明已建完,为何用to do?

应该选C,It took only one year or so to后接目的,
也就是得加do,所以后面就用get sth done的句子,不用考虑时态.

C