若从10~99这连续90个正整数中选出一个数，其中每个数被选出的机会相等，则选出的数其十位数字与个位数字的和为9的概率是(   )

一 Is this your coat, Danny?

— No,           coat is over there, on the table.

阅读短文，根据短文选择正确的答案。

    Uncle Wangworks in 1 bookstore in the middle of the city. The shop is not far from his home. It is about three kilometers (公里) away. So Uncle Wang seldom (很少) 2 to work by bus. He usually goes there 3 bike, sometimes on foot. It takes him ten minutes to get there by bike and forty minutes on foot. Today his bike is broken.  He wants to walk there. Now he is having breakfast. At ten to eight, he leaves home and walks to work.  It's twenty 4 earlier than usual.  His work starts at half past eight in the morning and 5 at a quarter (一刻钟) to five in the afternoon.