Put the following sentences in a negative form: dinner had been eaten by children before they went to school. problem had been discussed at the meeting before they came. test in English had been written by students by the end of the lesson. new poem had

Put the following sentences in a negative form:\nThe dinner had been eaten by children before they went to school.\nThe problem had been discussed at the meeting before they came.\nThe test in English had been written by students by the end of the lesson.\nThe new poem had been translated into Russian before the beginning of the 18th century.\nAll flowers had been planted by grandmother.\nThe report had been finished by professor by five o’clock.\nThe bicycle had been bought for the children by their parents.\nThe medicine had been brought when she came home.\nThe canal had been reconstructed by the end of the month.\nThe new equipment had been sold by the computer firm.