Song Li is a five-year-old girl. She lives with her parents in a big house. She usually plays with her mother when her father goes to work. Her father teaches history in a school. He always comes home with delicious(美味的) food. And Song Li is happy to see her grandparents too, because they always come to see her with delicious food.

Su Yong is a thirteen-year-old boy. He is in Mr. Wang's class, Class 3, Grade 7. He is good at computer science and he usually does his homework on the computer. He hopes(希望) there'll be more robot(机器人) teachers some day and they will help to check(检查) homework. Su Yong's father is a doctor and drives to work every day. Sometimes he drives Su Yong to school. But there is too much traffic on the way to school. Su Yong is afraid of being late, so he usually rides his blue bike to school.

— OK. This way, please.

— There ________ a tree and some flowers.

— She is standing ________ the corner of the street.

— Yes, I have ________ in my pencil box. Here is it.

(Jack is an exchange(交换) student. He will live in Wang Lei's house for half a year. Now Wang Lei is showing Jack around his house.)

A: Jack, come here!

B: OK, Wang Lei.

A:

B: Your living room is wonderful. It's so clean.

A: Thanks. We can watch TV here after dinner. The TV and the sofa are new.

B: Great.

A: It's next to the living room. My mother is cooking for us there.

B: Oh.

A: No. This is my sister's bedroom. Mine is on the second floor, next to yours.

B:

A: Yes, there is. And there is a bathroom in your bedroom, too.

B: That's great.

A: Sure. Let's go upstairs.