lend a (helping) hand

to help do something.

Jay expected his children to lend a hand where they were needed.

• someone's face doesn't fit
• someone's face is a picture
• someone's glory days
• in store for someone
• in store for something
• in sum
• in summary
• in tandem
• in tandem with
• in tandem with someone
• in tandem with something
• in tatters
• in tears
• intent on
• intent on doing something
• in terms of
• in terms of something
• in that regard
• in the air
• in the altogether
• in the back of beyond
• in the back of mind
• in the back of your mind
• in the bag
• in the ballpark