Understanding the Sentence Context

The sentence describes a situation where a report was eventually submitted, but there was an issue with the deadline. The key is to understand the sequence of events: first, the deadline was missed, and second, the report was later submitted. The word "Although" indicates a contrast between these two events.

Analyzing Verb Tense Requirements

To correctly express two actions that happened in the past, with one occurring before the other, we often use the Past Perfect tense. The Past Perfect tense is formed using 'had' + the past participle of the verb. It helps clarify which event happened first.

In this sentence:

• The action of missing the deadline happened before the action of submitting the report.
• Therefore, the verb describing the missing of the deadline should be in the Past Perfect tense.

Evaluating the Options

Let's examine each option to see which best fits the context:

• 1. had missed
  This uses the Past Perfect tense. The sentence would read: "Although he eventually submitted the report, he had missed the deadline by two days." This accurately shows that missing the deadline was an action completed before the submission. This is the most grammatically appropriate choice.
• 2. had been missing
  This is the Past Perfect Continuous tense. It suggests an ongoing action in the past that continued up to another past point. "Missing a deadline" is typically a completed event, not an ongoing action. This tense doesn't fit the meaning well.
• 3. was missing
  This is the Simple Past tense. The sentence would be: "Although he eventually submitted the report, he was missing the deadline by two days." This sounds grammatically awkward and doesn't clearly establish the sequence of events compared to the Past Perfect.
• 4. missed
  This is the Simple Past tense. While it indicates a past action, using it here doesn't emphasize as strongly as the Past Perfect that the deadline was missed *before* the submission. The Past Perfect tense provides clearer chronological information, which is beneficial in contrasting clauses like this.

Final Answer Explanation

The Past Perfect tense ('had missed') is the most suitable choice because it clearly indicates that the event of missing the deadline occurred prior to the event of submitting the report. This grammatical structure effectively conveys the sequence and contrast presented in the sentence.