I attach an image with the solutions to your question made by me, I leave the explanation below 

Depending on who the verb falls to, it can be one or another reflexive pronoun. 
They are classified as follows: 
- "To me" ⇝ "me" 
- "To you" ⇝ "te" 
- "To he/she" ⇝ "le" 
- "To we" ⇝ "nos" 
- "To you" ⇝ "os" 
- "To they" ⇝ "les" 
In this case, we can analyze the model of the exercise to clarify the other sentences. 
- A mí me gustan los conciertos. 
"A mí" is a direct object (DO), since it is the preposition "a" and an animate being.
"Me gustan" is the verbal nucleus of the verb phrase of the sentence, it is a reflexive verb.
"Los conciertos" is the subject of the sentence.
Note: These types of sentences are very common to see them with this construction: Direct object + Verb + Subject (DO + V + S).