What is the diffrence between the uses of since , will How do decide what to fill in a - English - Tenses

Question

What is the diffrence between the uses of since , will? How do
decide what to fill in a blank between the two choices Pls fast
URGENT

Ashitava Dutta · Accepted Answer

Since is used to denote a time frame which is
specific It is used in present perfect continuous tense when the
sentence refers to a specific time frame For example, He has been
staying here since 2008
Will is used in future tense

What is the diffrence between the uses of since , will? How do decide what to fill in a blank between the two choices..... Pls fast ...... URGENT.......