8 Put the words in the correct order to make complete sentences.
1 taking their forms / fluid substances / into moulds / solidify 2 drawing/ room temperature / is done at 3 not essential / heat /is/ in the drawing process 4 in the past / using / forging / a hammer / was done 5 can be / brittle materials / extrusion / done / with 6 many / is used / everyday objects / sheet forming / to make