B Fill in the prepositions (on • out of • as • in • for • across • through • out • at) if necessary. 1. Parachute … aeroplanes
2. Put … the fire
3. Fly … the air
4. Move … the sky
5. Work … summer camps
6. … university campuses
7. Work … lab assistant
8. Look … a job
9. Experience … this work
10. To be … touch