Exercise 4. Turn the sentences into the negative and interrogative form 1. They were late for school. 2. Mr. Tam took his children to the museumf last Sunday. 3. Hoa made a cushion for her arm chair. 4. Nam wrote an essay in Literature class this morning. 5. I watched TV yesterday morning. 6. Nam and you were in the English clubs last Tuesday. 7. They ate noodles two hours ago. 8. We always had a nice time on Christmas holiday in the past. 9. My father decorated the Christmas tree. 10. She bought a new dress yesterday.