how much revision do you do before an exam?

how much revision do you do before an exam? HOW much revision do you before an exam?这句话是什么意思 1.How do you study for an exam? you ()fail the exam if you don't do any revision How much coffee do you How much yogurt do you How much you can do how much do you like? how much milk do you How much do you want? how much exercise do you do? How much money do you spend ( ) her ?