Take a look at the the following examples of nouns, verbs, adjectives, adverbs, prepositions, subjects and objects:
"Joe ate his banana." - noun
"They ran all the way home." - verb
"You are a pretty girl." - adjective
"He quietly opened the door." - adverb
"The spider ran across the table." - preposition
"Paper is made from wood." - subject
"Leonard da Vinci painted 'The Last Supper'." - object
Note: The subject is usually the word that does something; whereas, the object is the word receiving what is done. A noun can be a subject and also an object.
Now read through the ten sentences and decide what each key word is:
Link: Parts of speech