The 22nd Winter Olympic Games was held from the seventh of February to the ______________ (二十三号) of February in Sochi, Russia.
How much time do the volunteers devote to              (改善) the environment around the area?
The smart phone            (invent) 14 years ago has greatly changed our everyday life.
---- Look! An old lady is           (躺) on the street over there.
---- We must do something to help her, but we have to take some photos first.
. Sam hardly has any good friends because he always            (拒绝) to help other people.