Select the most appropriate option to fill in the blank.
The child has been missing ______ yesterday.
Show answer & explanation
Correct answer: C
Explanation
The sentence uses the present perfect continuous tense ("has been missing"), which describes an action or state that started in the past and continues into the present.
Since: Used to refer to a specific point in time when the action began (e.g., yesterday, 9:00 AM, Monday).
For: Used to refer to a duration or period of time (e.g., for two days, for five hours).
Since "yesterday" is a specific starting point, since is the grammatically correct choice.
Complete Sentence:
The child has been missing since yesterday.