Select the most appropriate option to improve the bold part of the sentence.
No sooner I reached the platform than the train left.
Show answer & explanation
Correct answer: D
Explanation
When a sentence begins with a negative expression like 'No sooner,' it requires subject-verb inversion. This means the auxiliary verb (like had or did) must come before the subject (I).
Rule for 'No sooner': No sooner + auxiliary verb + subject + main verb + than + second action.
Correct Structure: 'No sooner had I reached the platform than the train left.'