it is an excellent time for swimming.请详解.

it is an excellent time for swimming.请详解. what do you think it is for?I think it填空 an excellent bowl A It is exciting to watch such an excellent football match . it is time for her _______(have) an english class first time,you did an excellent job It is time for school It is time for sports it is time for sleeping It is time for go Is it time for breakfast? it is time for class It is time to go swimming 是啥意思?