1 Complete the prepositions with the missing vowels.

1. **u**nder 2. **u**p 3. **a**cr**o**ss 4. p**a**st 5. **ou**t **o**f 6. thr**ou**gh 7. **i**nt**o** 8. b**e**tw**ee**n 9. d**ow**n 10. al**o**ng 11. **o**v**e**r 12. **o**ff