The civil engineering firm succeeded ______ completing the complex underground metro station ahead of the contractual deadline.

Answer and explanation

Correct answer: C. in

  1. Step 1: Identify prepositional collocation: The verb 'succeed' standardly takes the preposition 'in' followed by a gerund ('succeed in doing something').
  2. Step 2: The correct idiom is 'succeeded in completing'.
Answer
in.
Why not the others: 'on', 'at', and 'for' violate English verb-preposition collocations with 'succeed'.

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