To our surprise, the walls of the new bookstore ____books.A. are lined withB. is lined withC. have lined with
—Which do you prefer,a CD player or a Walkman? —________.I prefer a portable computer.
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. —________.