Choose the best idiom for each situation.

Choose the correct option.

We had to [feel under the weather|see which way the wind blows|be on cloud nine] before starting our charity project. We weren't sure people would support us.

I think you shouldn't spend too much money. You'd better [feel under the weather|be a bolt from the blue|save up for a rainy day].

Sally arrived without telling anyone in advance. It was like [a bolt from the blue|cloud nine|a wind blows].