Ответ:
1. If I have free time, I’d call her right now.
2. When I came home my mom cooked dinner for us.
3. I’ve made some coffee for you.
4. It was rainy last night.
5. The Volga is the longest river in Russia.
6. The girl did her homework before she went to the park.
7. When they arrived at the cinema, the film has begun already.
8. While I worked in the garden, I found a kitten.
9. If you drop the ice on water, it will float
Объяснение:
Примечание: в самом тексте задания есть опечатки: 7 предложение “the” вместо местоимения (he, she, they) , а так же неправильно составлены грамматические конструкции. 4 предложение принято использовать “the last night”