阅读对话，选择正确的答案。
I am Wang Yuan. I have two friends. They are Lucy and Jack. Lucy is a girl. Jack is a boy. They are from Canada. They are brother and sister. Their father works in a factory in Beijing. Lucy and Jack are in the same school. But they are not in the same grade. Jack is thirteen, and Lucy is eleven. Jack is in Grade Six. Lucy is in Grade Four. They go to school at seven in the morning. They go home at about four in the afternoon. I often help them learn Chinese. They often help me learn English. What grade am I in? Do you know? Jack and I in the same grade.
（  ）（1）Wang Yuan’s two friends are ________.
A. Chinese    B. England   C. Canada
（  ）（2）Lucy and Jack. are __________.
A. friends    B. brother and sister    C. cousin
（  ）（3）Lucy and Jack’s father works in __________.
A. Beijing      B. Canada     C. school
（  ）（4）They go home at about __________ in the afternoon.
A. seven   B. four   C. six
（  ）（5）I am in Grade __________.
A. four    B. five      C. six