I think it's...
1) the cave was dark and gloomy. 
2) The cave was spooky and narrow.
3) Jack could hear a spooky noise in the cave. 
4) Jack could see a black bat in the cave. 
( hopefully this is correct, sorry if by chance my answer is incorrect)
        
                    
             
        
        
        
The infinitive phrase in this sentence is to speak clearly, and it is used as a subject of the sentence. What/who is essential to being understood? To speak clearly. 
        
             
        
        
        
Answer: I believe its narrator
Explanation:
sorry if im wrong
 
        
                    
             
        
        
        
Answer:
See explanation 
Explanation:
So the predicate is the part of a sentence or clause containing a verb and stating something about the subject, apart from the noun/ subject of the sentence and then the verb phrase would be the verb paired with its object/ what the verb is doing to it (ex. running a marathon). In the case of number one it would be "writes funny stories" with the predicate being that along with the words following it in the sentence. Number 6 is "put the dirty dishes". Hope that helps!
 
        
             
        
        
        
Both are beautiful in their own way.Both struggle in their environment.Both are fragile creatures.Both tragically die.
Both are rare and unusual. I did it and got it correct.