помогите нужно сделать отриц и вопр предложения

We didnt use to swim in that river.
Did we(you) use to swim in that river? Yes,we did.

She didnt use to send parcels from Moscow.
Did she use to send parcels from Moscow? Yes.she did.

Mary didnt use to live in China but now she lives in Russia.
Did Mary use to live in China? Yes.she did.

Those boys didnt use to be enemies.
Did those boys use to be enemies? Yes,they did.

I didnt use to read in the evenings.
Did you use to read in the evenings? Yes,I did.