Past Simple structure

I bought a big cake. (-)

• I not bought a big cake

• I didn't buy a big cake

• Did I buy a bigh cake

• I did not bought a big cake

We spent a lot of money. (-)

• We didn't spent a lot of money.

• We not spent a lot of money.

• We didn't sweep a lot of money.

• We didn't spend a lot of money.

A cat saw the mouse. (?)

• A cat saw the mouse?

• Did a cat saw the mouse?

• Was a cat saw the mouse?

• Did a cat see the mouse?

The children took a bus to school. (?)

• Did the children taked a bus to school?

• Did the children took a bus to school?

• Did the children take a bus to school?

• Were the children took a bus to school?

Tom began playing football. (-)

• Tom does not begin playing football.

• Did Tom begin playing football.

• Tom was not began playing football.

• Tom did not begin playing football.

My grandpa built a big house. (?)

• My grandpa built a big house?

• Did my grandpa build a big house?

• Was my grandpa built a big house?

• Did my grandpa built a big house?

Boys fought in the playground. (-)

• Boys didn't fight in the playground.

• Boys didn't fought in the playground

• Did boys fight in the playground.

• Boys didn't find in the playground.

My friend knew a secret. (-)

• My friend didn't no a secret.

• My friend didn't now a secret

• My friend don't know a secret.

• My friend didn't know a secret.

You were at school three weeks ago. (?)

• Did you were at school three weeks ago?

• Did you was at school three weeks ago?

• Were you at school three weeks ago?

• Did you be at school three weeks ago?

You left two hours ago. (?)

• Did you left two hours ago?

• Did you lost two hours ago?

• Did you leave two hours ago?

• Were you leaved two hours ago?