Составить предложения на английском используя идиомы:to save up for a rainy day,to see which way the wind blows,to be a bolt from the blue

I’ve been saving up for a rainy day, so I’m not too worried about unexpected expenses.

I’m not sure if we’ll go ahead with the project or not; let’s wait and see which way the wind blows.

The news of her sudden resignation was a bolt from the blue; none of us expected it.