?Is this an apple？

?________ .

A. Yes, this is

B. Yes, it is

C. No, it is

D. No, this isn't

?Is this an apple?

?________.

A. Yes, this is

B. Yes, it is

C. No, it is

D. No, this isn't

This is ________apple.
A. a                     B. two                C. an

This is ________ pear. That’s ________ apple.

A. a...a　　　　B. an...an　　　　    C. a...an　　　 　D. an...a

This is ____ orange book and that is ____ apple.

A. a , an           B. an , a        C. an , an           D. a , a