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ОВР С азотной кислотой. Fes hno3 конц. Fe hno3 конц. ОВР 2al+3s=al2s4.
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Коэффициенты al s al2s3
Have или has правило
Has got или have got правило
Should must have to разница
Have to should разница
Reading bill
Глагол read в present continuous
Love reading books
Now read and answer
Love read book
ОВР С азотной кислотой. Fes hno3 конц. Fe hno3 конц. ОВР 2al+3s=al2s4. 