Відповідь:

1-They didn't go to the zoo yesterday.

1?Did they go to the zoo yesterday?

2-My sister didn'n break her leg last year.

2?Did my sister break her leg last year?

3-Molly didn't cook bread two days ago.

3?Did Molly cook bread two days ago?

Пояснення:

Ответ:

1) Did they go to the zoo yesterday?

They didn`t go to the zoo yesterday.

2) Did my sister break her leg last year?

My sister didn`t break her leg last year.

3) Did Molly cook bread two days ago?

Molly didn`t cook bread two days ago.

Вроде правильно, а так удачи в изучении английского языка ;)