My mom is ____ teacher. She’s ____ English teacher. A. a; an B. a; a C. an; a
I can’t play the piano,and________.
She’s not strong enough________walking up mountains.
—Could I borrow your camera?—________,but please give it back by Saturday.
—Sir,could you please put out your cigarette?This is a smoke-free(无烟的)school.—________.
Few people think about what they can do________others.