"Let's return the key."

[Margaret942443]

E hoihoi kāua i ke kī should be accepted since they did not specify how many people they are referring to.

[ThomasChoc]

amen. same.

[Ccf-Uk_2018]

Would this be correct? "E hoʻihoʻi kākou i ke kī.":

• E - To
• Hoʻihoʻi - Return / Put back
• Kākou - Everyone / All of us
• I - In / At / On (Location of)
• Ke - The
• Kī - Key

So "E hoʻihoʻi kākou i ke kī" would be literally translated as "To return, all of us, (location) at, the key" - which is then simply "Let's return the key."

Hope that helps and makes sense :-)