He gives him a present.

He gave him  a present.

Did he give him a present?

He didin’t give him a present.

They play different games.

They played different games.

Did They play different games?

They didin’t play different games

The children eat the cake.

The children ate the cake.

Did the children eat the cake?

The children didin’t eat the cake.

I have a good time.

I had a good time.

Had I  a good time?

I hadant a good time.

We work hard.

We worked hard.

Did we work hard

We didin’t work hard.

She says goodbye.

She said goodbye.

Did she say goodbye?

She didn’t say goodbye.