Years ago when I was an elder I would occasionally take the watchtower study as a stand in for the stand in!
Anyway you always had a core of (usually) "spiritual" sisters - elders wives, elders widows, super-pioneers that would answer till their tongues bled and I was grateful for them - I didn't even like long silences when doing question and answer items for just ten minutes in the service meeting or bible highlights. Now I see them as mainly deluded zealots.
You had as many sisters who would never answer. They were often "don't feel worthy" or "highly strung" or "panic attackers" who would just sit there dumb.
If you are a sister just "join" this group!
Brothers often were lame at answering - especially in bible highlights or service meeting discussions because you can't just see an answer in a paragraph without pre-studying it. Just join that group too. If you have social issues just play that card and say you don't feel comfortable on the stage. Or "develop" said social issues.
The tricky bit is keeping your poker-face with your wife.