This is _________orange. That's_________pen. A.a ,a B. an;a C.a;an
What you at this time yesterday?
— There are many people over there. What to the old man? — Sorry, I don’t know.
— I called you yesterday but no one answered. — Well, Maybe I in the garden at that time.
We won’t start the meeting our teacher arrives.
I find hard to get on with him.