第五十一課

　　A : What are these?

　　B : Can ' t you see? They're boxes !

　　A : Yes , but what are in the boxes ?

　　B : Oh , sweaters .

　　A : What colour are they ?

　　B : They ' re blue .

　　第五十二課

　　A : What can you see in Picture 1 ?

　　B : I can see a sweater .

　　A : What colour is it ?

　　B : I think it ' s green .

　　A : OK ! Colour it green , please !

　　B : OK!