阅读下面短文，从A、B、C三个选项中选出最佳答案。

Saturday is1 again. I'm very happy. I'm going to2with John in the morning. But I have to finish my homework first. My family will be very busy. My father is going to3 my grandparents. My mother is going to the supermarket to buy4fish, vegetables and fruits. My sister is going to the5to buy an English-Chinese dictionary.