Passive Voice

1) The words  are explained by the teacher today.

2) We  were sent a letter the day before yesterday.

3) This car  will not be stolen. It's too old.

4) This street  has already been closed because of snow.

5) A new restaurant  will be opened next week.

6) He  was invited to the party yesterday.

7) The blue box  cannot be seen.

8) I  was given the book by my friend last Sunday.

9) The dishes  have not been washed by my little brother.

10) I  will not be asked by Robert