She sits up late at night to study for her exams.

He sums up the main points of the presentation.

He summed up the meeting in a few key points.

She is sitting up in bed and reading a book.

She sat up in bed and looked around the room.

I am getting up early tomorrow morning.

She lived up to her reputation as a talented musician.

She is living up to her reputation as a talented musician.

She lives up to her reputation as a talented musician.

She started up her computer and began working on her project.