Eric:Hi,David.How are you? Are you OK?

David:No,I’m not.

Eric:What’s wrong?

David:It’s Tuesday.

Eric:So?

David:I have two math classes on Tuesday.

Eric:You don’t like math?

David:No.It’s so difficult! My father says it’s interesting,but I don’t think so.

Eric:So what’s your favorite subject?

David:Chinese.It’s difficult but interesting!

Eric:When is your Chinese class?

David:It’s on Monday,Wednesday,Thursday and Friday.I have to go now! I have math,history and science this morning.

Eric:OK,see you at music class.

David:Bye!