Complete the sentences with who, which, where or whose. 1 That young man over there, name I can't remember at the moment, is a famous ecologist. 2 We went on an expedition to the Amazon, _none of us had ever been before. 3 The doctor, can't have been older than thirty, examined Lisa's leg carefully. 4 Mrs Janet McGregor's favourite holiday destination is London, people don't recognise her. 5 One of my friends, wife runs a big business, has a made a big donation to an environmental charity. 6 The elephants, were drinking water from the river, suddenly became very anxious.