Inappropriate company

Q: My husband thinks I am a salafi, just because I say "salafi" things. But I am not, I am only asking such things, so he could clarify for me. I always ask whether what i'm saying is correct or not. But he jumps to conclusions and accuses me of becoming a salafi, and believing the statements I say (which I  don't!). I have a few salafi colleagues, who talk about things and I always come home and ask him. I admit before I was married I used to believe what they said because I didn't know what was correct or not, but now I know, I always ask. We always end up arguing about these things, and he gets angry and makes a scene. I tell him to shut up, which I know is rude. But I don't want his whole family to hear us arguing. What shall I do?

The meaning of Tawbah

Q: “Except those who repent and believe (in Islamic Monotheism), and do righteous deeds; for those, Allaah will change their sins into good deeds, and Allaah is Oft‑Forgiving, Most Merciful” [al-Furqaan 25:68-70]

Above saying from Allah that repent and do righteous deeds so if you repent do you also need to do righteous deeds sametime for your repentance to get accepted? Another way of asking is, If you just repent without doing righteous deeds, would Allah accept your repentance? or you have to repent
and also need to do righteous deeds to get your repentance accepted? Also how long do you need to do righteous deeds?

Nafil fasts

Q: Besides the Monday and Thursday fast, what are some other days that one should keep Nafl Fast? I have heard people say that one should fast on Ashura, and 15th of Shaban (Shab-E-Baraat), and on the birthday of Rasulullah (Sallallahu Alayhi Wasallam)? Are any of these correct or should these be avoided?

Depositing trust money into interest bearing accounts

Q: I am asking a question on behalf of a trust who runs musjids and madressas, schools and clinics. We had a executive committee meeting in which couple of members said to deposit excess money which we have in an interest bearing account and use that money for Roads, Toilets, Walls, etc. There was disagreement, most members disagreed and but was agreed to ask Mufti to address the question.