......we reached the exam hall than the door closed.
A No sooner had
B As sooner as
C As soon as
D No sooner
Solution
Correct Answer: Option A
'No sooner had......than' conjunction টি সব সময় জোড়া আকারে বসে।No sooner had we reached the exam hall than the door closed =আমরা পরিক্ষার কেন্দ্রে পৌছাতে না পৌঁছাতেই দরজাটি বন্ধ হয়ে গেল ।