这把钥匙可以打开古老的木门。

This ___key unlocks the ancient wooden door.

她把钥匙放在桌子上了。

She left the ___key on the table.

耐心是学习任何新技能的关键。

Patience is the ___key to learning any new skill.

按空格键继续播放视频。

Press the space ___key to resume the video.

这首歌是用降E大调演奏的。

This song is played in the ___key of E flat major.