_________, Mozart had already written his first symphony.

Question

BlackTom AI · Accepted Answer

The question presents a sentence with a blank: '_________, Mozart had already written his first symphony.'
Option 1: 'His age was six' — This is a noun phrase describing a state, not a natural time expression to introduce a past perfect event. It sounds awkward and does not smoothly set up the temporal context for 'had already written.'
Option 2: 'By the age of six' — This is a correct and conventional time expression that establishes the temporal boundary needed for the past perfect event 'had already written.' It indicates that by that time (when Mozart was six), the action (writing his first symphony) had already occurred. This fits grammatically and idiomatically.
Option 3: 'Six years old' — This is a simple predicate adjective phrase, not a proper introductory temporal clause. It would require reworking the sentence to something like 'Six years old, Mozart had already written...' which is incorrect as written and sounds unnatural.
Option 4: 'He was six' — This is a valid clause but functions as a complete clause rather than a time expression to modify the main clause. It does not introduce the timing in a way that correctly connects to 'had already written' without additional words (e.g., 'When he was six' or 'At six years old'). Therefore, as given, it does not fit smoothly.
In sum, the best fit is the option that clearly provides a temporal frame compatible with the past perfect construction, while the others fail to supply a proper or natural time expression for the clause.

SCS_0150_096_16 Academic English - Fall 2025 Grammar

_________, Mozart had already written his first symphony.

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