I – Choose the best options.1. Do you think there would be less conflict in the world if all people ________ the same language?A. spoke         B. speakC. had spokenD. will speak2. If you give me one good reason for your action, I ________ this incident again.A. will never mentionB. never mentionC. never mentionedD. would never mention3. Unless you ________ all of my questions, I can’t do anything to help you.A. answeredB. answerC. would answerD. are answering11. Câu điều kiện