Best-selling author and race car driver Han Han offered a 20 million RMB reward to _____ could prove his works were ghostwritten (代笔).
_______ professional pianist practises for several hours a day, but _______ has his own way of playing the Beethoven music.
The lawyer seldom wears anything other than a suit __________the season.
Water, _______enough, can change into vapour quickly.
To tell the truth, I won’t go to the party_______.
The man stopped from time to time_______whether he was being followed.