Common Expressions

Can you figure out these common expressions?

1. The second letter of the alphabet + the opposite of more + a female sheep

2. The 16th letter of the alphabet + to rent

3. A stinging insect + to dig ore out of the ground

4. Former + sticks used for pool + not you

1) Bless You
2) Please
3) Be Mine
4) ?

#4 excuse me