根据短文内容选择正确答案。

B

One Sunday morning Mr Green and his child, Bill, are in a big shop. Mr Green wants to buy a new blouse for Mrs Green. The blue blouse is very nice. It's eighty yuan. Bill likes oranges, so his father buys two kilos of oranges for him. The oranges are four yuan a kilo. Bill wants to buy some picture books and colour pencils, too. But there are too many people in the shop. Mr Green says, "We'll buy them next time".