To keep someone friendly or satisfied by complying with their wishes or preferences.
hold on
To keep; to store something for someone.
hold off
To delay (someone or something) temporarily; to keep at bay.
keep off the streets
To inspire or cause (someone) to avoid idleness, unemployment, poverty …
keep someone posted
To inform (someone) regularly of the latest developments.
sweet dreams
Said to someone before they fall asleep, wishing them a good sleep.
keep someone on ice
To keep someone uninformed and waiting for a response.