It depends if you they like the party’s or not but since s it’s in ellos(them) form it would be this: 
no,no les gustan las fiestas 
no they do not like party’s ^
si,les gustan los fiestas
yes,they do like party’s ^
        
             
        
        
        
Answer:
Usted hace la tarea cada día.
Explanation:
Usted hace la tarea cada día.
 
        
             
        
        
        
Most organisms live in the upper levels of the forest.
        
                    
             
        
        
        
The present tense form of estar is estar