в passive voice
My sister often prepares popcorn. It's easy to
make perfect popcorn. Follow the instructions
well. She put three tablespoons of oil in a large pot
and places the pot on the stove. She heats the oil
on a high flame. Next she adds a quarter cup of
popcorn into the pot and puts a lid on it. In the
next stage, she reduces the flame and shakes the
pot gently until the corn pops. Then she removes
the pot from the stove which is turn off. Finally she
put the popcorn into a large bowl.