English Language · Sentence Improvement
Select the most appropriate option to substitute the bracketed segment in the given sentence. If no substitution is required, select 'No substitution required'. It was the summer of 1994, and he (was doing) research on the ecology of Yellowstone Lake.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1will be doing
- 2will do
- 3was done
- 4No substitution required✓
Correct answer
No substitution required
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