After he had researched and _____ his paper, he found some additional material that he should have included.

Answer: Written
Explanation

The sentence starts with "After he had researched," which is past perfect tense. The correct structure to follow is:

"had + past participle" → "had researched and written".

This question appeared in Past Papers (7 times)
ETEA 25 Years Past Papers Subject Wise (Solved) (2 times)
This question appeared in Subjects (1 times)
ENGLISH (1 times)

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