It's a long time since we-last.
A
had met
B
have met
C
met
D
would meet
Correct Answer: met
Since দ্বারা দুইটি clause যুক্ত হলে verb নিম্নোক্ত নিয়মে হবে: Present Indefinite/ Present Perfect +since+ Past IndefiniteEx: It is a long time since we met last Past Indefinite Tense + since + Past Perfect TenseEx: They suffered since tornado had hit their village.