Find the preposition:
1) gracie and helen had not seen each other for 50 years.
2) "tell me about grandpa." said randy.
3) they carried the water packs on their backs.
4) i would go into the garden, but it is muddy.
5) tommy passed the peas to his mother.
6) we should meet somewhere beyond the city limits.
7) the lights activate automatically after sunset.
8) put an umbrella in the trunk.
9) add pepper to the soup.
10) erika waded into the stream and looked at the minnows.