The correct answer is 'If he had wrote the examination faster' i.e. error lies in this part of the sentence. Key Points The error lies in 'If he had wrote the examination faster' part of the sentence. Wrote needs to be replaced with written.. This sentence is an example of the Third conditional sentence. These sentences express situations that can not exist. The actions and events that happened in the past. These are often used to indicate a missed opportunities. Structure for Third conditional: If/when+ past perfect+would have+ past participle. ​The correct sentence is- If he had written the examination faster and answered one more question he would have scored better. ​Additional Information Conditional sentence:- As the name suggests, these sentences express conditions. In conditional sentences, there are two clauses of the sentences. One is a conditional clause and another one is main clause. Conditional sentences are of four types- Types of Conditional Sentences Definition and examples Zero conditional Sentence It expresses a factual condition. Structure: If/When+ present simple+ present simple Example:If you touch a fire, you get burned. First Conditional Sentence It expresses possible and likely future outcomes. Structure: If/when+present simple, will+ verb infinitive. Example: If I have enough money, I'll buy some new shoes. Second Conditional Sentence It expresses an Imagination. Structure: If/when + past simple, would + verb infinitive. Example: If I met the Queen of England, I would say hello. Third Conditional sentence It expresses a hypothetical situation. Structure: If/when+ past perfect+would have+ past participle. Example: If we had taken a taxi, we wouldn't have missed the plane.