I have riddles some hard riddles?

[EinsteinBach]

What is half of two plus two
How many months have 28 days
What holds water but has holes
who makes it tells it not,who takes it knows it not,who knows it wants it not

 

[MaloneSharpe]

1st one is tricky. depending on how you read it, could be 2 or 3
all months do
sponge
coffin

 

[ANSHU]

3



half of 2 is 1 plus 2 would equal 3
All of them. But February has only 28 days
sponge
Counterfeit money

 

[Kenny]

1/2 of 2+2 is 2

 

[Colin]

Half of (2+2) is 2. or (Half of 2)+2 is 3.
All 12 months have at least 28 days.
Fake Money?