Which is the correct shadow of the bird?

What is the riddle which can be asked all day with a different correct answer each time.

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

What has to be broken before you can use it?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What month of the year has 28 days?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?