________ hard you try,it is difficult to lose weight without cutting down the amount you eat.(2012·湖南)
There was ____ to prevent the accident.
Yesterday Mr. Li finally bought his own house, _______ is a hospital.
My brother's purse, _______ he put ¥1,000, was missing on the bus.
The football match _______ the students competed yesterday was very wonderful.
The reason _______ he was late again was that he was caught in a traffic jam in the rush hour.