Change the following sentences into passive voice

Exercise 8: Change the following sentences into passive voice
1. They didn't open the bank last weekend.
___________________________________________________________________
2. J. K. Rowling wrote her first book at the age of six.
___________________________________________________________________
3. Why didn't you clean the floor this morning?
___________________________________________________________________
4. Does the teacher explain the lesson thoroughly?
___________________________________________________________________
5. What time can all students hand in their assignments?
___________________________________________________________________
6. The company designs websites for clients.
___________________________________________________________________