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The diagram shows/illustrate the process (of producing bricks/by which bricks are made). In general, there are (don’t use the present perfect in this task, only use the past simple, active and passive voice) seven stages in the process of manufacturing bricks, starting with digging the clay and ending in delivery. First of all, a large digger collects the clay from the ground and transport it to the factory, and then the clay is put on a metal grid for breaking up the clay to smaller pieces. After adding sand and water, the mixture is placed into a mould or cut by a wire cutter to take the shape of the brick. The next stage is to put the bricks in a drying oven for twenty four to forty eight hours (from one to two days). Then the bricks go through a heating and cooling processes in the kiln, moderate and high temperature before the bricks enter the cooling chamber for twenty four to seventy two hours (from two to three days). At the final stage, the bricks are packaged and delivered to destination.