Can someone pls fill in these blanks and explain how you got your answer thank you in advance!!

Read each sentence carefully and select the option with the sentence written correctly. las chicas necesitan unas sandalias blancas. las chicas necesitan una sandalias blanca. las chicas necesitan unos sandalias blancos. las chicas necesitan un sandalias blanco.

Check all that correctly apply to each verb form. él va 1st person 2nd person 3rd person singular plural next question ask for

Fill in the blank with the correct form of the verb "tener" ellos muchos amigos