The popular idiom "hold the fort" or "hold down the fort" means to watch, manage, or protect an area while the speaker making the request is away.
I think it means that that person agrees with that others persons idiom and that it fit that question that the teacher or whoever asked that question.
To hope for the best
It was a phrase. "Hold on to your hat, there is going to be a bumpy road ahead"!
It means you refrained from saying something
No, the correct way to say it is "You are satisfactory" or "You are satisfactory to me." The preposition "to" is needed to show that you are stating your opinion on the other person's satisfaction.
To be tightfisted means that you hold on to your money. You're cheap.
The idiom "hold your tongue" means to keep silent or refrain from speaking. It is often used to caution someone to stop talking, especially if they are saying something inappropriate or sensitive.
Yes, "nose to the grindstone" is an idiom that means to work hard and diligently. It refers to the act of focusing and committing oneself fully to a task or project.
George Washington
Hold on can be an idiom meaning 'wait a moment', or 'stop'. Assuming that it is:Hold on, I'm about to finish my assignment!Wait, hold on for a second- I just got an e-mail.Assuming that you literally mean 'hold on':Hold on, I won't let you fall!
You cannot stand on the beach and hold back the tide is both an analogy and a metaphor.
Because the South wanted to assert that this island-fort in Charleston harbour was part of the Confederacy. The Union did not recognise the Confederacy, and tried to defend the fort as one of its own garrisons.