once; one time

all at once

times

please give me / (expressing a request) please do something for me

Please do (action)

Please do not (do)

please give me / (polite, imperative) please do something for me; expressing a request

up to this very moment

now / just now / soon

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