What Am I Riddles

Question: Swallowing one is fine.
Swallowing two together is fine.
But Swallow them separately and all shall fall.

What are they?

Question: Change a long pause into a short one by doubling a letter.What are the words?

Question: What sport starts with a T, has four letters, and is played around the world?

Question: What tastes better than it smells?

Question: A dad and his four boys stand in line.
All crowned, they toil in darkness.
Another family they see, two birds of a feather.
All of them together clad in leather.

What are they?