7 Read the text again and write True or False for sentences 1-6. Correct the false sentences. 1 We usually change the raw materials before we use them. 2 Iron ore is a rock with metal in it. 3 The furnace doesn't need to be very hot. 4 There are three ovens in this process. 5 Iron is stronger than steel. 6 We use moulds to make the shapes we need. 111 in home make