Перевести глагол в правильную видовременную форму в пассивный залог. the dog (to operate) on when the vet heard some noise in the reception

The dog  was being operated   on when the vet heard some noise in the reception

The official name of our Motherland Russia - Russia. The lower house of the Federal Assembly of the State Duma. The head of the Russian Federation Vladimir Putin. Originalthe name of the city based on the banks of the Neva by Peter the Great of Saint Petersburg. Moscow was founded in 1156.
 
Официальное название нашей Родины Российская Федерация - Россия . Нижняя палата Федерального Собрания составляет  Государственная дума. Глава Российской Федерации В.В.Путин . Оригиналназвание города, основанного на берегах Невы Петром Великим составляет Санкт-Петербург. Москва была основана в 1156 году.

- Good morning, children! (Good morning,)

- I am glad to see you. How are you today? (We are fine, thank you. And how are you?)

- I am fine, too, thanks.

- It’s so simple to tell you the topic of our lesson, but I know you are intelligent to guess it. I’d like you to listen some sounds and say what we’ll speak about during the lesson (Учащиеся слушают звуки ветра, шум дождя и гром молнии)

- So what do you think about the topic of our lesson? Can you tell it?

- Pupil: -Well, I consider, we’ll speak about weather.

- Teacher: - You’re absolutely right, but moreover it’s about climate and ecology.