Задайте вопросы. Дайте краткий ответ.

1 ... it a cake?

Yes ...

2 ... his friend at school?

yes ...

3 ... his friends at school?

yes ...

4 ... the sweets nice?

Yes ...

5 ... the farmer in the park?

Yes ...

Is it a cake?

Yes, it's a cake.

Are his friend at school?

Yes, his friend at school now.

Are his friends at school?

Yes, they are at school now.

Is the sweets nice?

Yes, it nice.

Are the farmer in the park? или без are

Yes, he is in the park.

и вообще не уверен на сто процентов) думаю прокатит)