Change all the sentences into the negative form: 1. I am going to the store. 2. She is studying for her exams. 3. They are playing in the park. 4. He was reading a book yesterday. 5. We were watching a movie last night. 6. Shall we go for a walk? 7. Will you join us for dinner? 8. She has a new job. 9. He has two dogs as pets. 10. They have finished their project. 11. I am not feeling well today. 12. She is not coming to the party. 13. We are not going on vacation this year. 14. Was he at the meeting yesterday? 15. Were they late for the appointment? 16. Will he pass the exam? 17. Shall we start the game now? 18. The cat has caught a mouse. 19. The team has won the championship. 20. I have completed my homework. 21. I...