Answer:
hayan recibido haya dado - hayamos entendido - hayan visto
Explanation:
Regular verbs form the present perfect by conjugating the auxiliary verb "hacer" in the subjunctive followed by the past participle of the verb.
The regular forms of the present perfect subjunctive are:
1st conjugation (ar), participle: "ado"
Example: hablar-> hablado
2nd conjugation (er), participle: "ido"
example: beber-> bebido
3rd conjugation (go), participle: "ido"
example: vivir-> vivido
Escribo because you are talking about yourself
The correct demonstrative adjective for this sentences would be "este".
* Este niño en la foto es mi primo Francisco". Because "ESTE" refers to a singular male subject. If it would have been a girl, the correct option would have been "ESTA". For plurals we need to use "estos" and "esa" when it is a singular, female and we point the subject at a certain distance. "Esa es mi prima" --> That is my cousin (over there)
