A warrant is an underlying assumption or inference that the writer takes for granted.
1.b
2.a
3.b
4.a
5.c
6.I’m pretty sure a,but possibly b
1. English is spoken all over the world.
2. Children under sixteen are not admitted by us.
3.Let the bill be paid today.
4. A novel was read by me yesterday.
5. The box is cleared three times a day by postman.
6. I am greatly astonished by your behavior.
7. Let it be told to them to leave the room at once.
8. Great things are done by great men.
9. A letter is being written by her.