今天的天空特别蓝，没有一朵云。

The ___sky is exceptionally blue today with no clouds in sight.

她的歌声如此美妙，仿佛来自天堂。

Her singing was so beautiful, it seemed to come from the ___sky.

孩子们把风筝高高地放飞到了空中。

The kids ___flew the kite high into the air.