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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Which one is an example of past perfect continuous tense? 

A.  Sumaiya had been reading the book for two hours.
B. Sumaiya was reading the book.
C. Sumaiya had read the book
D. Sumaiya has been reading the book
সঠিক উত্তরঃ A.  Sumaiya had been reading the book for two hours.
Explanation: Past perfect continuous tense----  S + had + been + (V1+ing) + Obj. + for/since + time.