I______he______come tomorrow.
I don’t think should be allowed to drive.
—Which university do you want to enter?—It’s hard for me a decision.
He is __________ unusual inventor and he invented _________ useful invention.A. a; an B. a; a C. an; an D, an; a
I didn’t know __________. Can you tell me?
It’s very kind _________ you to help me carry the boxes since it is difficult _________ a person like you to carry so heavy things.