The given idiom is 'a fair-weather friend'. This idiom means - a person whose friendship cannot be relied on in times of difficulty. For example: Don't rely on her, she is a fair-weather friend.

The most appropriate meaning of the given idiom is 'Object to'. The definition of it is as follows: Take exception: Disagree with, object to, or to be offended or made angry by something or someone.

The correct answer is "to be the person in charge". Key Points. Given Idiom: To call the shots means to be the person in charge, to have control over the progress of a situation. For example, With no boss to call the shots, he drew ideas from all over.

The idiom, 'to be in the doldrums' means 'to be depressed, low spirited or sluggish'. The use of the idiom can be seen in the following sentence: Harry has been in the doldrums ever since he lost his job as a print journalist.

"Cake walk" is used to describe something that is extremely easy or effortless, like a simple task.