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Images AL S AL2S3 РЕАКЦИЯ
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Al2o3+k2o. Al2o3 k. K2beo. K2o3.
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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
