Institution: Directorate of Primary Education - DPE Exam: Primary Exam Question Solution 21-06-2019
Topic: Fill in the Blank, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The sentence "I cannot—— to pay such high prices." requires a verb that conveys the speaker's inability to manage the financial burden of expensive prices. Among the given options, 'afford' (B) is the most appropriate choice.

The verb "afford" specifically refers to the ability to financially handle a particular expense or cost. When someone says they cannot afford something, it implies that they do not have the necessary funds or financial resources to purchase or pay for it. In this context, saying "I cannot afford to pay such high prices" clearly communicates a limitation in the speaker’s budget.

The other options do not fit the sentence structure or meaning appropriately. "Try" (A) suggests an attempt, but does not convey the idea of financial capability. "Able" (C) is an adjective that relates to capability but is not used as a verb in the context of this sentence. "But" (D) is a conjunction used to connect opposing ideas, which does not work as it does not complete the sentence. Thus, 'afford' is the only word that accurately completes the thought expressed in the sentence.