Answer:
Well, you will know when to use -er when you refer as verbs with infinitives ending. What you will do is drop the -er from the infinitive and add the second conjugation present tense endings: -o, -es, -e, -emos, -en.
Explanation:
To use -ar you will use the first conjugation, for example, hablar, lavar, llamar.
 
        
                    
             
        
        
        
Umm...
Mi Maestro es Bueno. Me gusta sus estratejias
trrust me this was uncomfortable
 
        
                    
             
        
        
        
Ummm I think that the answer is true
        
                    
             
        
        
        
Answer:
diez cuarenta y cinco a.m.