Multiple choice

I ______ here since last month.

  1. has been

  2. had been

  3. have been

  4. was been

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

Present perfect continuous with 'since' shows an action/state continuing from a past point to now. 'I have been here since last month' is correct. 'Since' establishes the starting point, and present perfect continuous emphasizes the ongoing nature.