Question

1.I ‘ve brought you a book.Here___(you),boy,please.

Answer 1

1.you are

2.B.to wrtie English

3.A.afford

here you are.给你

pay attention to do sth.注意干某事

too...to do sth.太...而...

首先排除buying,

接着是spend,可以说spend the day/time,但不能说spend something.

再接着是cost,应该是sth.cost sb.some money/time.主语是物,不是人.

所以答案为A.afford 付得起.