Make these sentences imperative.

[{'q':'Make a pizza.', 'a':'Make a pizza!'}, {'q':'Buy a present for mum.', 'a':'Buy a present for mum!'}, {'q':'Eat fast food.', 'a':'Don’t eat fast food!'}, {'q':'Do your homework.', 'a':'Do your homework!'}, {'q':'Run across the street.', 'a':'Don’t run across the street!'}, {'q':'Walk at night.', 'a':'Don’t walk at night!'}, {'q':'Use a fork and a knife.', 'a':'Use a fork and a knife!'}, {'q':'Take an umbrella.', 'a':'Don’t take an umbrella!'}].