You can’t have lost the keys.___ all your pockets again.
--- Poor Steven! I could hardly recognize him just now!--- . He has changed so much.
His promise he would give away half of the year’s income to the earthquake-stricken area turned out a lie, made the public feel cheated.
Swimmers must be very strong in order to build up speed because of the high resistance(阻力) of the water. Runners, , must struggle against the heavy resistance of the air and ground.
--- How much do I owe you for dinner? --- . It’s nothing.
My sister met him at Ningbo Grand Theatre yesterday afternoon, so he your lecture.