Mr/Ms Kiyoshi is my best friend.

The police suspect him of possessing stimulants.

The accuracy of this experiment is very high.

He was arrested for the use of stimulants.

His red hair is thought to be an atavism.

The water in the lake has cleared up, and you can see to the bottom.

The inner enclosure of this castle is very sturdy.

Advent is the season to celebrate the period before Christmas.

Qingming Festival is a day to clean the ancestors' graves and show respect.

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