Q1. [1]
Fill in the blank by using the correct form of the word in the brackets, for the given portion of a report.
The group __________ (walk) for hours through forests and hills in Mexico before it reached the barbed wire fence, marking the boundary of the forest.
Previously asked in CBSE board exam
2026 2/2/1 Q3 (i)
Generated by claude-sonnet-4-6 · 2026-06-15 07:10 · grounding rag
Model Answer
The group had been walking for hours through forests and hills in Mexico before it reached the barbed wire fence, marking the boundary of the forest.
Explanation
The sentence requires the Past Perfect Continuous tense ("had been walking") because the action of walking continued for a duration ("for hours") and was completed before another past action (reaching the fence). The structure is: had been + verb-ing. This tense shows a prolonged action in the past that ended before a specific past moment.
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