Error Grammar of Past Tense II

Look! You droped your keys.

Where stayed you in Los Angeles?

Does your cousin go to school yesterday?

I didn’t saw John. He wasn’t there.

We buy a car a few weeks ago.

We didn’t have got much sun here yesterday.

He didn’t knew the answer.

We traveled to Liverpool last summer.

Paul is very tired because he didn’t slept well last night.

How long it took you to get to school this morning?