Despite the company's rapid growth and market expansion, its profits have remained relatively stagnant, largely because of an inability to control costs, which ________ rising steadily over the past three years.

A has been

B is

C have been

D were

E had been

Solution

Correct Answer: Option C

- প্রদত্ত বাক্যের শূন্যস্থানে have been বসালে বাক্যটি সঠিক হবে।
- কোনো কোনো কাজ অতীত সময়ে শুরু হয়ে বর্তমানে চলছে বুঝাতে present perfect continuous tense হয়।
- Relative pronoun এর পূর্বে plural noun থাকায় পরে plural verb হিসেবে have বসেছে।

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