identify prepositions and subjects some have more than 1

1)The puppy came to our tent and slept at the foot of my sleeping bag.

2)A skywriter flew over the field during the game.

3)The city was without power for several hours

4)The cross-country team ran down the avenue and through the park.

4 answers

Check this list of prepositions and see which ones you find in your sentences.

http://www.englishclub.com/grammar/prepositions-list.htm

We'll be glad to check your answers.

When you look for the subjects, remember a subject can never be in a prepositional phrase.
but some of them have adverbs and i get confuse
I don't see any adverbs, but I see plenty of prepositions and four subjects.

What have you decided?
A preposition begins a phrase that ends with a noun or pronoun.

Try to find the phrases that begin with a preposition and ends with a noun or pronoun. Give a try -- and we'll be glad to help you.