It is possible that 2030, cars and airplanes will run on the new fuel.A. byB. onC. untilD

发布时间：2020-08-16 07:45:12

It is possible that      2030, cars and airplanes will run on the new fuel.
A. by
B. on
C. until
D. at

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(答案→)A. by
B. on
C. until
D. at
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