二、选择填空
26. –Mum, this is my English teacher, Miss Green.
--_______________.
A. Good night! B. How are you? C. Thank you. D. Nice to meet you.
27. –What’s on the table?
--This is _________ apple, and that is ________ pear.
A. a; an B. an; a C. a; a D. an; an
