Номер 208 напишите по образцу употребите present perfect или past indefinite

1. how can i help you?

2. do you have warm mittens?

3. of course. do you have white and blue scarves?

4. how much does it cost?

i was at school yesterday.

he walked there.

do you know him.

they have done homework.

1. were

2. know

3. knows