Peter is ten years old. He is _______ to go to school.

A．old enough        B．enough old        C．young enough      D．enough young

Mary didn’t understand such sentences as“She is blue today”，“You are yellow”，“He has a green thumb”，“He has told a white lie”and so on．And she went to the teacher Mrs James for help．
Mary：Mrs James，there is a colour in each of the sentences．What do they mean?
Mrs James：In everyday English，Mary，blue sometimes means sad，yellow afraid．A person with a green thumb grows plants well and a white lie is not a bad one．
Mary：I’m afraid I don’t understand them a11．Would you give me an example for“a white lie”?
Mrs James：Certainly．Now I just give you some cakes．In fact you don’t like it，but you don’t want to let me know it．Instead you say，“No，thanks．I’m not hungry．”That’s a white lie．
Mary：It sounds very interesting．Thanks very much．
Mrs James：You are welcome．Colours are meaningful．I think you will meet more sentences like these in the future．Please come to me if you have any questions．
【小题1】Blue sometimes means sad in________English．