его друзья ездили в Америку в прошедшем году моя сестра смотрит

His friends went to America last year. Did his friends go to America last year? Who went to America last year? Did his friends go to America or to Germany last year? Where did his friends go last year? His friends went to America last year, didn't they?

2. My sister watches TV in the evenings. Does my sister watch TV in the evenings? Who watches TV in the evenings? Does my sister watch TV or play the piano in the evenings? What does my sister do in the evenings? My sister watches TV in the evenings, doesn't she?

3. They are walking in the park now. Are they walking in the park now? Who is walking in the park now? Are they walking in the park or in the garden now? Where are they walking now? They are walking in the park, aren't they?