After seeing what ? More information please?
The second answer. Because “sus” is the only one which has the “s” because it is plural. If it would be “nuestro” it should had an “s” like “nuestros hijos son altos” or “tus hijos son altos”
- Servir ⇝ Sirva

You only have to remove the <u>direct object</u> that is added to the verb. The verb must not have the direct object.
<h3><em><u>MissSpanish</u></em></h3>
Answer:
- <u>Translated from Spanish language:</u>
"Try it! Fill in the blanks Activity Textbook Instructions Indicates the appropriate reciprocal reflexive of these verbs in the present or past tense. February 21 11:59 PM 3 attempts remaining Grade settings External references Grammar presentation 386-387 Questions present Model (write) The bride and groom are written. Question 1 with 3 blanks (write) Us. Ana and Ernesto. You . Question 2 with 3 blanks (listen) My uncles. We . They . Question 3 with 3 blanks (see) Us. Fernando and Tomás. You . Question 4 with 3 blanks (call) They. My brothers . Pepa and me preterito Modelo (greet) Nicolás and you greeted each other. Question 5 with 3 blanks (greet) Our neighbors. We . Armando and Daniel. Question 6 with 3 blanks (talk) Friends. Helena and me . You . Question 7 with 3 blanks (meet) Alberto and me. You . They . Question 8 with 3 blanks (find) Ana and Javier. The cousins . My sister and I."