E.mixed(pronouns and possesife adjective) : 9.the teacher tells___ (we/us) to make friends with students from English speaking countries so that___ (we/us) can

E.mixed(pronouns and possesife adjective) :
9.the teacher tells___ (we/us) to make friends with students from English speaking countries so that___ (we/us) can improve out english .
10. alia's brother wanted to have pen pals too. alia itroduced___ (he/him/his) to Hannah's and Saidah's brothers. Now, they have become good friends. Sometimes Alia writes about___(theirs/them) in___(hers/her) letter to Hannah and Saidah . pleasee answerr