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МатематикаВопрос:
8. Metals ______ (expand) when you ______ (heat) them.
Ответ:
Metals expand when you heat them.
Объяснение: Это условное предложение нулевого типа, описывающее общеизвестный факт. В обеих частях используется Present Simple. 'Metals' во множественном числе, поэтому глагол 'expand' остается в начальной форме. 'You' требует начальной формы глагола 'heat'.
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