Put the verb into Present, Past or Future Simple Passive:
Russian … … by many millions of people. (to speak)
English and German… … in lots of school. (to teach)
Our new book … … … next year. (to publish)
The letters … … a week ago. (to send)
We …… to a party yesterday. (to invite)
The poem …… by Pushkin. (to write)
The window … … by my Dad. (to open)
New year … … in many countries (to celebrate)