HSK 4
厕所
cèsuǒ名
toilet; lavatory
请问厕所在哪一层。
Qǐng wèn cè suǒ zài nǎ yì céng.
Excuse me, which floor is the restroom on?
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 4.