keep mum about造句

You just keep mum about it.

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.

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.

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

"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.