Nick:Hey Marcus,have you heard about the art and science fair?

Marcus:You mean the one just outside the science museum?

Nick:Yeah,that’s the one.The school notice board says that all students are invited to attend for free! Our school is paying for it!

Marcus:Wow,that’s great!

Nick:I went there yesterday.

Marcus:Did you see anything cool?

Nick:Of course! All the works there were made by university students.

Marcus:What did you see?

Nick:I saw a huge model plane.It’s made of used wood and glass.I also saw a really beautiful painting.It’s made from grass,leaves and flowers.

Marcus:Oh,yeah,the fair is about environmental protection and recycling,right?

Nick:Yes,and the students came up with some really interesting and creative ideas.