from the knowledge you have in your memory, without thinking much.

to work / study late into the night

be optimistic, even difficult times will lead to better days.

adapting to circumstances without real control, like someone going along with events rather than shaping their own destiny. It implies being reactive instead of proactive.

put yourself in a tough position, on one’s own or in a disadvantageous position.

stuck between two very bad options, you have to choose between two equally unpleasant courses of action.

Go to bed in order to sleep.

It means that it is now your turn to make a decision or take action in a situation, and the responsibility is on you.

To be wrong about the reason for something or the way to achieve something

pretend not to notice; deliberately ignore sth you know it’s wrong, overlook, disregard.

to avoid talking about something directly or getting to the point, often usually because it is uncomfortable.

detecting that something isn’t right and there might be a reason for it or that sb is being dishonest.

to share a secret that wasn’t supposed to be shared.