Английский язык помогите пожалуйста

piece, cherry, like, have

penic dick

Complete the sentences with the missing parts of the idioms.
Write one word in each gap.
Julia is a straight-A student. This exam will be a piece of cake for her.
A fantastic firework display at the end of the festival was the real cherry on the cake!
Those T-shirts sell like hotcakes. We have to hurry if we want to buy one.
You can both help us and have a good time at the park if you agree to walk our dog. Don't miss your chance to have your cake and eat it.