Write the correct word or phrase.

1. Global warming is thought (to be caused / is caused) by pollution.

2. There (are to be estimated/ are estimated) to be about 5,400 different species of mammals.

3. It (is to be reported/ has been reported) that gunshots have been heard in the city centre.

4. The escaped prisoner is believed (to use / to have used) a rope to climb the wall.

5. It (is to be calculated / is calculated) that about 60% of a man's body mass is water.

6. Over 200 people (are being understood / are understood) to have been injured in the explosion.

7. It is considered impolite in some cultures (to be eaten/ to eat) with your left hand.

8. There (mean / were meant) to have been 60 crates of olives in the order, not 600!

9. (It / There) has been suggested that people who don't recycle should pay more tax.

10. Your order is guaranteed (will be delivered / to be delivered) within three working days.