Опишите распорядок дня в Ловудской школе в романе джейн Эйр​

Объясните вот есть глаголы-исключения, которые не видоизменяются от времени. А в какой форме их тогда писать? 
6. A: This dress doesn't fit me any more.   
B: Why don't you buy a new one? 
7. A: Your perfume smells nice. What is it?    
B: It's a new perfume called Sunshine. 
8. A: What is Jane doing?   
B: She is smelling the flowers in the garden. (действие происходит СЕЙЧАС)
9. A: What are you looking at?  (действие происходит СЕЙЧАС) 
B: Some photos I took during my holidays. They aren't very good, though. 
10. A: You look very pretty today.     
 B: Thank you. I' ve just had my hair cut. 
16. A: He is very quiet today, isn't he? (неправильный глагол, с местоимением he берем is - такое правило)
      B: Yes, I think he has some problems. 
17. A: Would you like some cherries?
      B: Yes, please. I love cherries. They're my favourite fruit. 
18. A: I'm sorry, but I don't understand what you mean. ( глагол understand не употребляется в Continuous)
      B: Shall I explain it again? 
19. A: The children are making lots of noise today.
      В: I know, but they are having fun. (действие происходит СЕЙЧАС)
20. A: This cake tastes  awful.
      В: I think I forgot to put the sugar in it!