(B) future - The sentence suggests a hopeful outlook, and "future" is the most appropriate word to indicate a time when things are expected to return to normal.

(B) cleave to - The phrase "tongue seemed to cleave to the roof of his mouth" conveys the idea of sticking or adhering.

(C) purely - The phrase "purely incidental" suggests that any resemblance is entirely accidental, making "purely" the most appropriate choice.

(C) break - The collocation is "break the ice," meaning to initiate a conversation in a social setting.

(A) dominating - The phrase "outstanding and dominating figures" implies that Tagore and Gandhi were influential and had a significant impact.

(B) Immigrant - The sentence describes someone settling in a different country, making "Immigrant" the most appropriate one-word substitute for the underlined group of words.

(D) death - The phrase "risk, uncertainty, and fear of death" completes the sentence appropriately, highlighting a common source of anxiety.

(B) superstitious - The correct spelling of the word is "superstitious," which refers to a belief in superstitions.