a) the future tense of the binyan nif’al
b) the future of the binyan pu’al
c) the future of the binyan huf’al

huf’al is the passive conjugation of hif’il. The binyan huf’al is little used in spoken Hebrew. However, you will find forms of huf’al in the press and literature, eg (of the hif’il-verb mekim – to erect):

מוזיאון לסרטים ישראליים יוקם במערב העיר
muze’on le-sratim yisra’eli’im yukam be-ma’arav+ha’ir
A museum for Israeli movies will be erected in the west of the city.

Future huf’al: the hif’il-verbs mazmin – to invite

singular1 st person2 nd person3 rd person
Iyou myou fheshe
will be invitedwill be invitedwill be invited
אוזמןתוזמןתוזמנייוזמןתוזמן
uzmantuzmantuzmeniyuzmantuzman
plural1 st person2 nd person3 rd person
weyoutheywe
will be invitedwill be invitedwill be invited
נוזמןתוזמנויוזמנותוזמנו
nuzmantuzmenuyuzmenutuzmenu