词语巧搭配。

凉凉的   地球

红红的   鸟蛋

圆圆的   楼房

高高的   苹果

—May I come in? I’m sorry I’m late. 

—Come in, please. But could you tell me         ?

A．how do you come to school

B．what were you doing then

C．who you talked with

D．why you are late