My name is Lucy. I’m a   (16) . I’m American. I’m at school now. My teacher is a   (17) . Her name is Wang Pei. She is an   (18)  teacher. David is my friend. He is English. He is fourteen. David and I   (19)  in Class 3, Grade1. I am in Number I in Row 2. He is in the same row. His English is   (20) . He has(有) a parrot. Its name is Polly.

My name is Peter and I’m 12 years old. I don’t have a brother or a sister. I am in No.2 Middle School. My parents are Gray and Nancy Wilson. My father is a worker and my mother is a music teacher.
My father’s parents are David and Jacy Wilson. They don’t live with us. They live in the nearby city（附近的城市）. David is 63 and Jacy is 61. They come to see us once a month（一个月一次）.
My mother’s parents are Henry and Sara Smith. Henry is 62 and Sara is 58. They are farmers. They have a farm. They grow vegetables and rice（种植蔬菜和水稻）. I like to go to see my grandparents.
【小题1】How many children do Gary and Nancy Wilson have?

从方框中选择恰当的短语并用其适当形式填空.(每空1分，共10分)

--- Listen! David is talking happily with his mother in the next room.

　--- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.

A. should           B. must             C. can’t            D. mustn’t