What do the underlined words in the following paragraph refer to?
Colonel Rankin opened his parachute, it blossomed out over him, and another tremendous blast battered his body, with wind and hail. He could withstand its force, suddenly he felt being pulled up by a current of air and he was floating in the clouds, which enclosed him from all directions.
1. it : ………………………..
2. his : ………………………..
3. its : ………………………..
4. which : ………………………..