单选题
The original research facility was ______ in 1967 thanks to the foresight of our founding chairman.
A、
build
B、
building
C、
to build
D、
built
【正确答案】
D
【答案解析】
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。
提交答案
关闭