shall we
-(으)ㄹ 까요? is used when the speaker wants to either to suggest doing something together with the listener or to ask about the listener's preference regarding something.
The subject of these sentences is 우리, which is often omitted.
The English equivalent is 'Shall we...?' or 'Why don't we...?'.
When answering, the suggestive form -(으)ㅂ 시다 or -아/어요 is used.
When the stem ends in a vowel or ㄹ, -ㄹ까요? is used, and when it ends in a consonant, -을까요? is used.
Used to make a suggestion to the listener, sometime with the intent of doing something together.