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Hard 1 Mark

English Conditional Sentences

Choose the sentence with no conditional error.

A If the engineers had tested the bridge more thoroughly before opening it, the structural failure would have been prevented entirely.

B If the engineers tested the bridge more thoroughly before opening it, the structural failure would have been prevented entirely.

C If the engineers had tested the bridge more thoroughly before opening it, the structural failure would be prevented entirely.

D If the engineers had tested the bridge more thoroughly before opening it, the structural failure has been prevented entirely.

Explanation

This sentence discusses a past event (the bridge failure) that already happened and cannot be changed, so it correctly uses "had tested" and "would have been prevented" throughout.

Reference: Skoolyst English Grammar Guide , Page 4

Hint

For past events that are over and can't be undone, both clauses must stay anchored in the past with "had" and "would have."

Explanation

Hint

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