I have sent ----- S.M.S.
Fill in the blanks a or an or the or none.
Explain it authetinc
S. the - a particular message that the reader knows about. a - one message, not defined.
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piyushahaI have sent ----- S.M.S.
the - a particular message that the reader knows about.
a - one message, not defined.
Assuming you're going to say the letters S, M, S, and not the words they stand for, you need 'an' or 'the'. Both of those are correct.
CJ
(x-post)