(literary) they

To perform; to do; to conduct oneself; to carry out.

to have a talk, to meet face-to-face with

talks / meeting

importance, consequence, significance

important, significant

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

a summit (gathering of leaders)

importance

those (referring to things distant from the speaker)