Предлоги. ( In \ at) England most bread is made ( of \ with) wheat. When the wheat is ripe it is taken ( at \ in \ to)

 In England most bread is made of wheat. When the wheat is ripe it is taken to the flour mill. At the bread factory the flour is mixed with fat, salt, water and yeast to make a soft dough. When the dough has risen it is cut into pieces and they are made into loaves. The loaves are put on big trays and left in the oven to bake.