Rohan acted as though he ____(know) everything.

Complete sentence: Rohan acted as though he had known everything.

• As if / as though এর পূর্বে present indefinite tense থাকলে as if / as though এর পরে past indefinite এবং be verb থাকলে সবসময় were হয়।
Example:
He behaves as though he owned the place.
He speaks as if he were mad.

• As if / as though এর পূর্বে Past indefinite tense থাকলে as if / as though এর পরে past perfect হয়।
Example:
He told the matter as if he had known it.