----- Nội dung dịch tự động từ ảnh ----- SS ke rm ple) 10. The children (laugh) and playing together. Exercise 3. Change the following sentences into positive (+); negative (-) or interrogative (?). (+) I was cooking dinner yesterday at this time. (-) (?) (+) She was studying hard for her exams. (-). (?) (+) They were playing basketball in the park. (-). (?) (+) We were attending the concert while it was raining outside. (-). (?) (+) He was busy designing his website. (-) (?) (+) The children were dancing to the music. 6. 4. 5. 1. 2. 3. nu.
