Образуйте отрицательную и вопросительную формы следующих предложений: 1.the puplis remember this rule. 2.mother turned off the gas. 3.we shall start at dawn

The pupils don*t remember this rules. Do the pupils remember this rule?
Mother didn*t turn off the gas. Did mother turn off the gas?
We shall not start at dawn. Shall we start at dawn?

The pupils do not remember this rule. Do the pupils remember this rule? 

Mother didn't turn off the gas. Did mother turn off the gas?

We shall not start at dawn. Shall we start at dawn?