单项选择题
A.it is extremely sunny and warm B.it shines and/or snows C.the sun melts their sculptures D.old sails are raised into the air
A.After the first snow falls in Colorado. B.Once they submit their applications. C.Before their sculptures are sketched. D.As soon as the judges have chosen the teams.
A.Wood. B.Snow. C.Ice. D.Rock.