first,boil the spaghetti in a large pot.
then,remove the spaghetti from the pot and rinse it with cold water.
next,cut the tomatoes in half.cut the onion into small pieces and chop up the garlic.
after that,pour the oil into a frying pan and stir-fry the vegetable in the pan.
fiinally,add salt and pepper.serve the spaghetti with grated cheese.