en：hold sth on the open palm.
en：rest one's chin in the right hand.
en：paint clouds to set off the moon provide a foil to set off a character or incident in a literary work.
en：make sth stand out by contrast set off.
en：leave a house in sb's care.
en：ask sb's favour.
en：Thanks to our hard work, we can fulfil the task on time.
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