Відповіді: Стр.121 (5)

5. Combine each pair of sentences using the relative pronouns on the right, as in the example. Add commas where necessary.

1. The video that Sarah made on travelling is very interesting.

2. I want this phone, which is on sale now!

3. My father, who likes biology, made a presentation.

4. The reason why you are tired is that you worked late last night.

5. Mr Smith, whose idea didn’t work, was fired.

6. I live in the city where many scientists were born.