No sooner did A the professor came B into the classroom than C the light went off D No Error E ........

English ( Master) Conjunctions

No sooner did (A) / the professor came (B) / into the classroom than (C) / the light went off. (D) / No Error (E)

“No sooner did” always demands a verb (that comes before ‘than’) of the present tense.

“No sooner had” requires a verb (that comes before ‘than’) of the past participle form (3rd form).

Hence, the usage of the verb ‘came’ in the given sentence is erroneous.

The correct verb should have been ‘come’.

Correct Sentence:

No sooner did the professor come into the classroom than the light went off.

Hence, option B is the correct answer.

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