Question

I __________ this book since morning. (A) had been reading (B) has been reading (C) have had read (D) shall be reading​

Answer 1

I (A) had been reading this book since morning.

• We use the past perfect continuous tense to depict an action that started at a certain time in the past and continued to occur till another time in the past.

• As the sentence depicts an action that started in the past (morning) and continued till another time in the past, hence we will use the past perfect continuous tense of verb in such a sentence.
• As option (A) had been reading is the past perfect continuous form of the verb hence it is the correct option.

Answer 2

Explanation:

I had been reading this book since morning.