______ book on the desk is _____ useful one.
—I________a lot of time playing compurer games every day.—Oh,boy.It’s bad for your eyes.A.spendB.takeC.pay
—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.