I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Which is faster, Heat or Cold ? Explain.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Which number should replace the question mark?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?