Choose the correct sentence involving a third conditional structure expressing past unreality.

Answer and explanation

Correct answer: C. If they had calibrated the sensor, they would have obtained valid data

Third conditional requires 'if + past perfect' in the subordinate clause and 'would have + past participle' in the main clause.

Practise more Advanced Grammar, Syntax and Vocabulary.

Free questions with an explanation for every one, and full timed SIMAK UI mock tests.