The original research facility was______in 1967 thanks to the foresight of our f

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问题 The original research facility was______in 1967 thanks to the foresight of our founding chairman.

选项 A、build
B、building
C、to build
D、built

答案 D

解析主语是research facility，备选答案的动词原形为build，两者应构成被动语态。答案是(D)built.

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