阅读短文，选择正确的答案并把单词写在横线上。

My name is Liza. I'm sitting with my friends and we're all looking at a big screen(屏幕). I'm drinking a coke. The man sitting in front of me is very tall, so I can't see very well.

My name is Jack. I'm walking on the grass with my dog. Some old people are doing Kung fu under the trees. A family is having a picnic under a tree. A girl is flying a kite with her father.

My name is Jason. There are so many things here. Some are foods, some are drink, some are fruits. My mum and dad like grapes, so they want to buy some grapes. And I am going to buy some coke. Oh, Liza's birthday is coming. I need to buy a birthday card for her.