在日本，很多人选择开轻自动车因为它们在城市里停车很方便。

Many people in Japan choose to drive a ___kei because they're easy to park in the city.

这个密码是你账户安全的关键。

This password is the ___key to your account security.

他指着那座山说那是我们的目的地。

He pointed to ___Kei mountain and said it was our destination.