2. It was a sunny afternoon and people were sitting on the grass in the park. Then suddenly it started to rain.

Ответ:

2. It was a sunny afternoon and people were sitting on the grass in the park. Then suddenly it started to rain.

Перевод:

Был солнечный день, и люди сидели на траве в парке. Потом внезапно начался дождь.

Ответ: were sitting, started

У тебя все получится, продолжай в том же духе!