Вопрос:
5) People pollute rivers, lakes and seas, so they are not very clean. If people _______, they
Ответ:
Решение:
- Определим, что пропущена глагольная форма.
- Условие «People pollute...» указывает на настоящее время.
- Глагол должен согласовываться с подлежащим «people» (множественное число).
- Наиболее подходящий глагол, продолжающий мысль: do not stop.
Ответ: do not stop
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