“keep mum about”造句，怎麼用keep mum about造句

"Huck Finn and Tom Sawyer swears they will keep mum about This and They wish They may Drop down dead in Their Tracks if They ever Tell and Rot.

There is an incentive to collude with other suppliers to boost prices, just as two prisoners have good reason to keep mum about their crime.

At a service desk, the agent is expected to keep mum about her problems and to show a reasonable interest in yours.

It is hard to know whether that is happening in finance, since hedge funds tend to keep mum about how successful (or not) particular forecasting algorithms are.

You just keep mum about it.