alguien podría ayudarme con esto:
Practice reading these sentences in the negative. Read them (1) without the contractions, (2) with the contractions. 1. The lesson is difficult. 2. The classes are small. 3. The students are late. 4. Virginia is speaking English. 5. I am waiting for her. 6. We are writing letters. 7. That is a familiar greeting. 8. They are Colombians. 9. He is a South American. 10. They are shaking hands now. 11. We are leaving tomorrow. 12. She is living on Clark Street. 13. I am studying the lesson now. 14. The teacher is explaining it. 15. They are coming to class to- day. 16. He is very glad to see them. 17. We are ready to go now. ​