Hand 1:
What does partner's bid mean and what should be bid here? [Note: 4♣ is either a raise of spades or strength showing cb, 4NT is 1430 in ♠, 5♣ says 1 or 4 KC in ♠, 5♦ should be asking about the Q of trump]
Hand 2:
W N E S
P 1♥
2♠ All Pass
North wanted to trap pass to defend 2S*, South didn't feel hand was worth a second bid even in the pass out seat.
Apportion the blame.
Hand 3:
W N E S
P 1♥
2♠ All Pass
W is new to duplicate (bid out loud, not with bid boxes, and was confused by the movement of players around the room), E is only slightly more experienced.
T1 W leads ♣A - 6 - 8 - ♠2.
T2 S leads ♠K - A - 4 - 7.
T3 W leads ♦A - 6 - 2 - 3.
T4 W leads ♠8 - T - J - Q.
T5 S leads ♦4 - 5 - K - 9.
T6 N leads ♥K - 2 - 3 - Q.
East and West both followed very smoothly.
T7 N leads ♥T - 6 - ??
East played smoothly.
Go for the drop or the finesse? We need the hearts for 0 losers since we've lost 1 ♠, 1♦, and are missing the top remaining trump. 8 ever-9 never versus restricted chance, versus table feel judging non-experienced players.

Help

W N E S
1♥ P 1♠
3♣ 4♣ P 4♠
P 4NT P 5♣
P 5♦ P 5♥
P ??