Complete the sentences with one word in each gap.

We were all surprised when John, who had never been interested in the environment, suddenly decided to become a Greenpeace activist.

1. The price of kale, ___________ is a vegetable similar to wild cabbage, has doubled over the last couple of years.

2. I've just watched a documentary about the Amazon by Zack Firth, ___________ was a good friend of mine at secondary school.

3. My neighbour, ___________ great-grandfather was a tribal chief, is keen to learn more about Native Americans.

4. A national newspaper has just chosen Solihull, ___________ I grew up, as the best place