Question

Combine using "since"
It rained continuosly. So, I could not go out to post the letter.​

Answer 1

Answer:

since,it rain continuously I could not go out to the post the letter

Answer 2

The complete sentence is:

Since it rained continuously, I could not go out to post the letter.​

* The word 'since' has been used as a conjunction in this case.

* This has been used to cite a reason, in other cases it can also be used to denote a period of time.

* In sentences having a 'since', mostly we use present perfect or past perfect tense.