Choose the most suitable option to fill in the blank.

He promised to stay with her ______ his last breath.

Correct option is C

Explanation:

The correct answer is till.

The word "till" means up to a certain point in time. In this sentence, the phrase "till his last breath" implies continuing to stay with someone until the very end of life. This makes "till" the most appropriate choice.

For example:
"She waited for him till midnight."
"The soldiers fought bravely till the end."

Information Booster:

Usage of "Till":

"Till" is commonly used as a preposition or conjunction to indicate time duration.
It is interchangeable with "until" but is more informal.

Difference between "Till" and "Until":

"Till" is slightly more casual and often found in spoken English.
"Until" is more formal and used in writing.

Example:
"Wait till I get back!" (Informal)
"The store is open until 10 PM." (Formal)

Additional Knowledge:

Either (used for choices, not for time duration)
Example: "You can take either coffee or tea."

Nor (used in negative pairings with "neither")
Example: "She neither smiled nor spoke."

As (used for comparisons or reasoning, not time duration)
Example: "She is as kind as her mother."