Question
In each of the following questions, a sentence is
divided into four parts (A), (B), (C) and (D), One of these parts may contain an error. Identify the part which contains the error, if there is no error, choose option (E) Hardly had the final report been released (A) when several experts (B) begun questioning (C) the validity of its conclusions. (D) No error (E)Solution
With “hardly had”, the structure requires past perfect + past tense. Correct form: “began questioning”, not begun questioning.
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