Read an judge. (读一读，判断下列句子是“Y”否“N”正确)
( )1. Dongdong is a girl.
( )2. Mr Xue is Mary's teacher.
( )3. Zhang Yuan is Bob's friend.
( )4. Mary is from China.
( )5. Steven is Bob's friend.
1.N 2.N 3.N 4.N 5.Y
温馨提示：