1.the internet 
2 online catalogue (or less often card catalog) usually found on a PC and the front of the library 
3 Author's name, title and call number 
4 A number that indicates a books category and where to locate it in the library 
5 the Dewey Decimal System on the library of Cosngress system
 
        
             
        
        
        
Declarative sentences( End in period, like the sentence I am writing now), Exclamatory sentences(End in exclamation mark), Interrogative sentences(End in question mark), Imperative sentences(giving a command), and Conditional sentences(If____________, I would_____________.).
        
                    
             
        
        
        
Answer:
The four ,tired travelers arrived at the house. 
I hope this helps:)
Explanation:
 
        
             
        
        
        
Answer:1. (2b /1a 2.( 2a / 1b
Explanation: this question throw me for a couple of minutes now what I realized that is can be answered in multiple ways