1.It needs enormous courage to make a d eparture from the tradition

2.Tom used to be very shy , but this time he was bold enough to give a performance in front of audiences .

3.Many educators think it desirable to develop the creative spirit in the children at an early age .

4.Assuming this painting is realy  a masterpiece , do you think it ’ s worthwhile to purchase it ?

5.If the data is statistically valid , it will help us  for the problem we are investigating .