Our teacher always tells us that lessons can be learned to face the future, ____ history can’t be changed.

Though most people are ____ the dangers of drivingafter drinking, many still insist on drinking alcohol.

Thething__________wefeltveryproudis Liaoning aircraft carrier.

―What do you think of your new Pad―Good. I don’t think I can find a ______ one.

Thanks for your kind help! We would have _________ lost the game!