The old professor told us every part of the materials should be made use of the power sta

发布时间：2020-08-16 12:03:27


The old professor told us every part of the materials should be made use of      the power station.
A. to build
B. building
C. build
D. built

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(答案→)A. to build
B. building
C. build
D. built
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