"eat out of house and home" = eat everything in the house
"Teenagers always are hungry, and they will eat you out of house and home if you let them."

"bed of roses" = something isn't easy or without problems
"Living in an apartment with roommates isn't always a bed of roses."

"ace a test" = get a perfect score
"Amber is going to ace tomorrow's quiz because she studies so hard, and she has a very good private tutor to help her."

"hit the books" = study hard
"When are you going to hit the books for the test? You've been playing video games all afternoon."

Be in for it: khả năng cao sẽ gặp rắc rối lớn
Ex: they're in for it

To get full custody of: đc toàn quyền chăm lo quản lý

"be an open book" = be a person who hides nothing about your life
"Please ask me anything. I'm an open book."

"grab a bite to eat" = go out to eat
"Let's grab a bite to eat after the movie."

"pig out" = eat a lot
"My brothers pigged out on pizza last night."

"lend someone a hand" = help someone
"Could you lend me a hand with the housework before your parents arrive."

"lift a finger" = do the smallest amount of work required
"Susan's husband rarely lifts a finger to help her around the house."