二. 单项选择（20分）：
( )1.My uncle and aunt ______ teachers.
A. is B. are C. am D. be
( )2. Those are my ______.
A. sister B. brother C. sisters D. friend
( )13. Your father’s sister is your ______.
A. grandmother B. brother C. aunt D. uncle
( )4. ______ is my fri end, Mary.
A. These B. This C. Look D. He
