Format:
Correct/completed sentence --> why it is the way it is
Answer:
1 - A mí me GUSTA jugar deportes--> Singular (I like to do sports)
2 - A mí me GUSTAN las enchiladas--> Plural (I like enchiladas)
3 - A nosotros nos GUSTA estudiar --> Singular (We like to study)
4 - A nosotros nos GUSTAN los deportes--> Plural (We like sports)
5 - A ustedes les GUSTA cantar --> Singular (You like to sing)
6 - A ustedes les GUSTAN --> Plural (You like sports)
Hope it helped,
BioTeacher101