Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

What is the word or phrase?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

One day, Birbal got late for a function and Akbar was highly disappointed.
Please forgive me Jahanpanah. I arrived late because my child was crying and I had to calm him down, explained Birbal.
Does it take this long to placate a child? questioned the emperor. I feel that you have no idea about how to raise a child. I order you to act like a child and I will act like your father to show you how you should have dealt with your child. Come on! Ask me all that he asked from you.
Father, I want a cow, said Birbal.
The emperor quickly ordered one of the servants to bring a cow to the kingdom.
I want to drink its milk, now, now, now! said Birbal, imitating the voice of his child.
Akbar asked his servants to milk the cow and give to Birbal.
The servants quickly milked the cow and offered the milk to Birbal. He sipped in a little and then gave the bowl to the emperor.
As Birbal put up the next demand that was put up by his child a few hours ago, the emperor was stunned and left the room.
What did Birbal say?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

What goes up but never comes down?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Can you replace the question mark with the correct number in the below table sequence?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?