Scooters became popular in 1900s.
Scooters didn't become popular in 1900s.
He wanted to drive.
He didn't want to drive.
I knew that scooters were old.
I didn't know that scooters were old.
She watched TV last night.
She didn't watch TV last night.
He went to school by motorbike.
He didn't go to school by motorbike.
I walked to school this morning.
I didn't walk to school this morning.
She saw her teacher yesterday.
She didn't see her teacher yesterday.
We played football last weekend.
We didn't play football last weekend.
I did my homework.
I didn't do my homework.
He made pizza last night.
He didn't make pizza last night.
