3.the average american nearly twelve pounds of chocolate each year
4. may acually prevent several serious diseases.
Hope it help
        
             
        
        
        
Answer:
Adverb
Explanation:
In the sentence "The street lights are shining brightly at my window" there is no participle, only verb, "shinning". The word "brightly" is acting as an adverb, modifying the verb, "shinning" in the sentence. Remember, adverbs modify verbs, nouns, adjectives, or pronouns. It describes the manner, degree, extent, such as brightly describes in what manner or degree to which the light shines. 
 
        
             
        
        
        
If you came from the bustle of a city to a small village in the country, you would notice many things are different. For example, to start with, the pace of life is a lot slower since it is a small place and it doesn't take so long to get from one place to another. There might not be public transit there and but you may be able to get around mostly by walking or a short car ride since it is small in area.People may be more friendly and have more time to talk. There will probably only be a few stores and relatively small in size so the food and merchandise selection probably won't be so good. 
        
             
        
        
        
Nominative pronouns are i, you, she, he, they, we, it
        
                    
             
        
        
        
Answer:
There are actually 2 correct answers in these examples. Number 2, and number 4 are the same, and are both correct.