Multiple choice

He has been waiting for his mother ____________ morning.

  1. since

  2. from

  3. for

  4. by

  5. .

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Here, since is the correct option as it is used in the period after a or from a specified time in the past. From is used to indicate the point in time at which a particular process, event, or activity starts. For is used as a function word to indicate purpose, intended goal etc and by is used to indicate the means of achieving something.