This is _________orange. That's_________pen. A.a ,a B. an;a C.a;an
--- Which month has _________ days in a year? --- February.
--- Do you know Peng Liyuan? --- Of course, she is First Lady of China, famous singer.
----Do you mind if I take the dog away? -----___________.
Not only you but also Peter _______ going to climb the hill next Sunday.
The little boy showed great _______in the _________story.