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МатематикаВопрос:
5 Isaac Newton ..... radioactivity. Henri Becquerel did.
Ответ:
Нужно вспомнить, кто открыл радиоактивность.
Past Simple форма глагола discover (открывать) будет discovered. Так как в задании стоит "not discover", нужно использовать отрицательную форму Past Simple, т.е. didn't discover.
Получается:
Isaac Newton didn't discover radioactivity. Henri Becquerel did.
Ответ: didn't discover
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