The idiom "busy as a beaver" is used to describe someone who is extremely busy and industrious, working very hard and with great energy.

The idiom "mend fences" means to make amends, repair a damaged relationship or situation, or to try to restore peace or harmony after a conflict or disagreement. It can also mean to take steps to prevent future disputes or misunderstandings.

The idiom "black day" is used to describe a day of great misfortune, bad luck, or tragedy. It can also be used to describe a day when something goes horribly wrong or when there are many accidents or incidents.

The idiom "bide time" means to wait patiently for something to happen or to refrain from taking action until a particular moment or opportunity arises. It implies that the person is not eager or anxious to do something, but rather is content to let things unfold in their own way.

The idiom "carry on" is used to express that something should continue or proceed as planned, despite difficulties or challenges. It can also be used to encourage someone to keep going or not give up.