It’s very difficult to learn geography well, but you can’t __________.
What’s the matter ________ you?
I should go to see a dentist because I ________.
— ________ do you watch TV?— Every day.
---- Is that pen? ----- No, It is eraser.A. a; a B. a; an C. /;an
---What’s on the desk?— There are two .A. pencil B. dictionary C. rulers