单项选择题
（） their hats into the air, the fans of the winning team let out loud shouts of victory.
A．To throw B．Thrown C．Throwing D．Being thrown
单项选择题 The director had her assistant （） some hot dogs for the staff members.
单项选择题 Before building a house, you will have to （） the government's permission.
单项选择题 In time of trouble Charlie could always （） a solution.
