Choose the pair of words from the options that best completes the sentence meaningfully and correctly: We were thinking ______ it ______ something like a requiem for our age.

Introduction / Context:
This question checks a very common English prepositional phrase: “think of something as something”. It tests whether you can choose the correct pair of small words that together create a natural idiomatic expression. Such questions are frequent in competitive exams because prepositions look simple but carry subtle meaning and must be used in fixed patterns.

Given Data / Assumptions:
- The sentence is: “We were thinking ______ it ______ something like a requiem for our age.”
- There are two blanks to be filled with a pair of words from the options.
- “Requiem for our age” describes a serious, reflective piece of art or music representing an entire era.
- We assume the speaker is describing how they regarded or viewed “it” (probably a film, book or project).

Concept / Approach:
The key is to recall the correct idiomatic frame: “think of it as X”. The verb “think” here does not mean “consider an idea” in general, but “regard” or “view”. English has stable patterns such as “think of him as a friend” or “think of this as a warm-up”. Hence the correct combination is “of” for the first blank and “as” for the second blank. Other prepositions like “for”, “since” or “because” either change the meaning or break the grammar.

Step-by-Step Solution:
Step 1: Focus on the structure “thinking ______ it ______ something”. It suggests “thinking of it as something”. Step 2: For the first blank, the natural verb–preposition combination is “think of something”, not “think for” or “think about it because something like a requiem”. Step 3: For the second blank, we need a word that links “it” and “something like a requiem”. We usually say “consider it as something” or “think of it as something”. Step 4: The pair “of, as” exactly matches this structure: “We were thinking of it as something like a requiem for our age.” Step 5: Read the sentence fully with this pair to ensure that tone and meaning are coherent.

Verification / Alternative check:
Insert “of, as” and read: “We were thinking of it as something like a requiem for our age.” The sentence now clearly states that they regarded that work as a kind of requiem. This is grammatically correct and idiomatically natural. No other combination gives this clarity and correctness simultaneously.

Why Other Options Are Wrong:
- “For, because”: “thinking for it because something” is ungrammatical and does not express “regarding it as”.
- “For, as”: “thinking for it as something” still sounds wrong; “think for” is not the right verb–preposition pair here.
- “Of, since”: “thinking of it since something like a requiem” breaks the meaning and uses “since” incorrectly as a conjunction of time or reason.

Common Pitfalls:
A common trap is to select prepositions only by rough sense (“for” looks related to “for our age”) without checking fixed expressions like “think of it as”. Another pitfall is ignoring the entire structure and focusing only on one blank. Always recall standard English patterns and read the entire sentence after inserting the chosen pair.

Final Answer:
The pair that correctly completes the idiomatic phrase is “Of, as”, giving the sentence: “We were thinking of it as something like a requiem for our age.”