6 Complete the sentences. ► The police discovered drugs inside his shoes. 1 At the moment there is no evidence that life ____ on Mars. 2 They left camp and went to ____ the countryside to see what they could find. 3 With the use of ____, TV can show news from anywhere in the world. 4 Scientists believe they will have to ____ out further experiments. 5 I don’t know who first ____ the camera. Do you? 6 We knew he was ill, but the doctors have now ____ that it’s serious.