Fill in the blank with the suitable adverb:
I’ll get around to finishing that book ___.

Sometime means “at some point.”
As an adjective, sometime also means “former.”
Some time means “a period of time”—usually a long period of time.
Sometimes means “occasionally.”

When you use sometime as an adverb, it refers to an unspecified point in time.
It doesn’t refer to a span of time — that’s what some time is for.
Here’s an example of sometime used in a sentence.
- I’ll get around to finishing that book sometime .
In the sentence above, we’re not talking about how long it will take to finish the book (span of time);
we’re talking about when the book will be finished (point in time).
You can usually replace sometime with someday or at some point when it’s used this way.