trzymać się na odpowiednim poziomie inglês:

When I was living abroad I found it difficult to keep up with the news as I didn't speak the language.

I had to walk fast to keep up with him.

He will keep up mowing a lawn even if is rains

I can't keep up

I wasn't able to keep up with the business, and I ended up with a 25-year detour.

I feel it's important to keep up withcurrent events.

I love what your doing, keep up the good work.

keep up close relationship with your friends

I don't want to keep up my family's traditions anymore

It's hard to keep up with all the latest improvements.

I eat very healthily and do lots of excercise to keep up my strength.

In order to keep up such high standards of tennis, it is necessary to practise hard.

I read the papers to keep up with what's happening in the outside world.

I couldn't keep up with the work my teacher gave me. It was too difficult.

He is working so hard! But I think it will be impossible for him to keep up the place.