I'm probably not that advanced for I don't regard those problems as 'wtp?'. 1) 2/5 I have 5♥'s and nice clubs, I don't see why I would want to bid just 4♥. 2) 3/5 The problem here is that partner might pass with many hands on which we should saving in 5♣ or just letting them play (and trying to make it). 3) 3/5 The heart suit is not so great but being w/r I don't want to pass. I'd bid 4 with pd's hand, though (♣A instead of K and it's cold, ain't it?) 4) 4/5 Not so good. I bet no one has a fit in this hand... 5) 4/5 I lean to 4NT.