4 ) 2.22 Read the questions. Then listen again and write the answers in your notebook. 1 To go on the Desert Challenge course, ... a you must be under thirteen. b you must see a doctor. c you should come with a friend. 2 You must take a lot of water because ... a you'll need it for cooking. b you'll get very thirsty. c you won't find any in the desert. 3 When it gets hot, ... a you mustn't take your clothes off. b you should wear shorts and a T-shirt. C you shouldn't wear a hat. 4 If you get lost, ... a you should wait for help to arrive. b you should use your mirror to signal for help. c you should use your map to get out of the desert.