Hi,
#1 sure
#2 due to lack of a better bid - pass
Seeing the hands
#3 The person to act was your p, he has the shortage.
Partners hand is an example, why some play, that the X over 1H denies 4 Spades,
and others play the meaning of this X and the meaning of a 1S response reversed.
You agreed to play X as showing 4 spades, and a 1S response showing 5, that is ok,
but was not ok for the given hand.
#4 2D with the North hand is not my cup of coffee, ..., even being passed hand - sometimes
I have to pass, because I can opent, but I may still have inv. values.
With kind regards
Marlowe