Question

I have not seen him ____, last month option for, from, since, till​

Answer 1

the answer is since ....

Answer 2

I have not seen him since last month.

The word 'since' is conjunction. The word 'since' has two meanings. They are-

• It depicts time.
• It depicts the reasoning.

Here, 'since' depicts the time period. It portrays that last he was seen one month back. It shows that the phenomenon or event that has been spoken about had happened at the time period that has been mentioned. Now the extent of this period is depicted by the word 'since'.