[J:Jim T:Tom B:Bob(shop assistant)]

  J:I want to have a pet.But I don”t know what the best pet is.

  T:I think you should go to the pet shop to find which is the best!

  J:Good idea!Let”s go!

  (When they arrive the pet shop.)

  J:Oh!There are lots of pets.I will choose one of them.What should I choose?

  T:Ummm!Look at the dog!Isn”t he cute!

  J:Oh yeah!But sometimes he is dirty.So I have to clean up his room every day!

  T:How about spiders?

  J:No,no,no!They are too scary!

  T:Do you like pot-bellied pig?He is clean,cute and beautiful.

  J:OK! And Mr Bob, how much is the pot-bellied pig?

  B:Oh!it”s only $200.

  J:Oh!Here is $200.Here you are!

  B:This is your pot-bellied pig.Here you are!

  J:Thank you very much!

  B:You”re welcome!!!