Ответ:
6) Did
7) I don't eat meal since I began to follow a diet
8) Mary uses this toothpaste for a long time
9) His grandma hasn't been smoking since she visited her heart doctor
10) She doesn't drink strong tea for many years
Объяснение:
У Вас на картинке ошибка, должно быть (вроде бы) не he, a she, и не his, a her