Diferencia entre masa, comunidad ,colectivo

Translation:  

Difference between mass, community, collective

You can go on Google...it have some helpful sites there.

the right answer is c. tiempos

el partido de fútbol tiene dos tiempos

in english, this translates:

a football match has two halves

these halves cosists of 45 minutes each.   each half runs continuously. on the other hand, there is usually a 15-minute half-time break between halves.  

answer is a: las

explanation:

the reason for this answer is becouse it's a plural frase which talks more then one thing