If electricity goes out..., If Instagram crashes..., If we use solar energy..., If my battery is 1%..., If people use the cellphone every day..., ... cities will be cleaner., If robots help in hospitals..., If engineers build eco-friendly buildings..., ... people will live longer., If buildings use solar panels..., If there is no internet..., ... students will not learn, If biotechnology helps agriculture..., If people use less plastic..., If schools stop using paper....

First conditional

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인쇄
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순위표

비주얼 스타일

옵션

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