Сделать предложения отрицательными 1) The construction of Moscow - Peterburg line began in 1843 2) The students were testing new devices in the labolatory last evening.

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  1. 30 августа, 14:55
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    1. The construction of Moscow - Peterburg line began in 1843. - The construction of Moskow - Peterburg line didn't begin in 1843. - Строительство линии Москва - Питербург (не) началось в 1843 году.

    2. The students were testing new devices in the labolatory last evening. - The students were not testing new devices in the laboratory last evening. - Студенты (не) тестировали новые приборы в лаборатории вчера вечером.
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