我喜欢在白天散步，因为阳光让人心情愉快。

I enjoy taking walks during the ___day because the sunshine lifts my mood.

许多动物在白天睡觉，在夜晚捕猎。

Many animals sleep in the ___day and hunt at night.

今天下了一整天的雨。

It has rained all ___day today.