5 Complete the sentences with relative pronouns. 1 We were all surprised when John, ____ had never been interested in the environment, suddenly decided to become a Greenpeace activist. 2 If you have any questions about the well-being of your pet, you can ask Ben Brown, _______ will be our guest next week. 3 The company has just decided to expand its headquarters, _______ will take some two years to complete. 4 The Devil's Mouth, _______ two big rivers meet, is a beautiful place and a good spot for a short walk.  5 It has just turned out that professor Wellington, _______ theories have often been ignored, is right after all.  6 Most people in Bhutan, _______ is a very small country in the Himalayas, are Buddhist.​