Can u help me replace the underlined word with a noun?

Question

Sentence: When it("it" underlined) began in the morning, he("he" underlined ) would beat out a steady rhythm.

Can u please replaces it with a noun?

You can add other words, such as a, an , or the

Answer 1

rain....Harry

Answer 2

When the steam heat began in the morning, the radiator would beat out

a steady rhythm.

Answer 3

<< When "the practice" began in the morning, "the drummer" would beat out a steady rhythm. >>

Answer 4

When the rain began in the morning, the chief would beat out a steady rhythm.