Put the sentences in the passive voice
mary shut the window because it was cold
*We have eaten all the bread
*My grandma will bake a cheesecake on Sunday
*The students play basketball
*They produce Rolls Royce in England
*A postman has just delivered a letter for me
*They will announce the winner next week
* Shakespeare wrote Romeo and Juliet
*I make my bed every day
*Al and Sue will buy a new car next year