Диалог на тему: shopping используя как можно больше слова: must, could, can, should

seller: hello. can i help you?

you: i must buy black shoes.

seller: so these shoes.

you: how much?

seller: 20 $

you: but i only have   17 $

seller: sorry, we couldn't help you

you: but i should buy these shoes. these present for my brother.

seller: so for these we can doing salle. you can buy these shoes for 17 $

you: thank you very much. you help me.

seller:   please, come again.

you: bay, good luck. 

1.they are in the school, aren't they?  

2.they aren't at home? are they?  

3.they do exercises, don't they?  

4.she can sing, can't she?  

5.he doesn't like soup, does he?  

6.there are a little bear, aren't there?  

7.it is a cake, ian't it?  

8.you will go to the cinema, won't you?  

9.you can't swim, can you?  

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