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Question

Difficulty: HardVerb Tense, Aspect, and Mood

Throughout the 1870s, naturalist Charlotte Wheeler kept meticulous records of the exotic flora in her conservatory. In her diaries, Wheeler—who frequently shared her observations with other botany enthusiasts—often noted that by the time a rare orchid species finally bloomed in her greenhouse, she _______ its developmental stages for months, documenting each subtle shift in leaf coloration and stem length. Which choice conforms to the conventions of Standard English?

  1. A
    has been tracking
  2. had been trackingAnswer
  3. C
    is tracking
  4. D
    will track

Answer

had been tracking
The past perfect progressive verb phrase 'had been tracking' is correct because it indicates that an action began in the past and continued over a period of time ('for months') up until another event in the past ('bloomed'). This matches the past-tense framework established by the verbs 'kept' and 'noted' in the passage.

Step-by-Step Solution

1
Identify the temporal framework of the passage by looking at neighboring verbs.
The verbs 'kept,' 'noted,' and 'bloomed' establish a past-tense framework for events occurring in the 1870s.
Verb tenses within a passage must remain consistent unless there is a clear chronological shift.
2
Analyze the relationship between the target verb and the other events in the sentence.
The phrase 'by the time a rare orchid species finally bloomed' indicates that the tracking occurred prior to the blooming. The phrase 'for months' indicates a duration of time leading up to that point.
An action that began and continued over a period of time prior to another past action requires the past perfect or past perfect progressive aspect.
3
Select the option that conforms to this past perfect progressive aspect.
The verb phrase 'had been tracking' is the correct past perfect progressive form.
It maintains tense consistency and correctly expresses the completed duration before a past point.

Key Concept

Maintaining verb tense consistency and selecting the correct aspect (past perfect progressive) to show the chronological relationship between past events.
Estimated Time:1m 30s
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Topics

Verb Tense, Aspect, and Mood

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