We should encourage our students _____ hard instead of ____ too much time playing games.
—Could you please________the floor for me?—Yes,sure.
—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.