Some 5 card stud hands

[MyMindIsGoing]

These hands are hypthetical, but situations like these come up often, would be nice to read how people would play them. The table is 0.5/1.0 limit with 0.05 ante (prima). It is a 8 person table with 7-8 active players. Normal mixture of players, most are very very loose passive and 2-3 (including me) tight agressive regulars. 4-5 persons usually see 3rd.

1. Suited high live card play: 2 brings it in for a small bet (0.25), 8, 5, K and J call. I have (Q)Ts and am last to act. Should I:

a. Fold
b. Call
c. Raise

2. Small pair play: 3 brings in for the large bet (0.5), K reraises, everyone folds to me, I have (5)5 and one person behind me to act who has an 8 showing. Should I:

a. Fold
b. Call
C. ReRaise [not sure if I can do that, it seems that sometimes people can do it sometimes not, why?]

3. Hidden weak ace play: 5 brings in for the small bet (0.25), an 8 folds, I have (A)5, two persons behind me have K showing, the rest of them medium cards. Should I:

a. Fold
b. Call
c. Raise