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填空题英语(一)

2021-10-09

in mind although on designed like
which popular fuel parking spaces electricity

Carmakers are also spending money 8_ research to make alternative-fuel cars. Maybe one day, most of us will drive biodiesel（生物柴油），hydrogen（氢）or solar-powered cars.

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8.spend money on sth.：花钱在....
8.on

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