Поставить глаголы в present simple либо в present continuous. объясните, , вот есть глаголы-исключения, которые не видоизменяются от времени. а в какой форме их тогда писать? 6. a: this dress (not/ fit) me any more. b: why don't you buy a new one? 7. a: your perfume ) nice. what is it? b: it's a new perfume called sunshine. 8. a: what is jane doing? b: she ) the flowers in the garden. 9. a: what (you/look) at? 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 ) very quiet today, isn't he? 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 understand) what you mean. b: shall i explain it again? 19. a: the children are making lots of noise today. в: i know, but they ) fun. 20. a: this (taste) awful. в: i think i forgot to put the sugar in it!

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!

6 does not fit
7 smells
8 is smelling
9 are you looking
10 look
16 is
17 love
18  don't understand
19 have
20 tastes

На счёт глаголов исключений, в основном их используют в Present Simple.Но опять же тоже не всегда.Бывают случаи,когда их можно писать в Длительном времени.
К примеру  "This cake tastes awful."  здесь  taste  используют в SIMPLE 
Но  "I am tasting the soup" здесь в Continuous .