6.4.2.1 6.4.4.1 Read and mark the sentences T (true) or 2 a) F (false). 1 The fish on the Great Barrier Reef don't get close to divers 2 The Incas used to go on holiday to Machu Picchu. 3 We don't know why the Incas left the city of Machu Picchu. 4 You can get to the singing dune by car. 5 When you go down the dune, it makes a singing sound.​