Sentence examples for kept this up from inspiring English sources

I kept this up for seven years.

We have kept this up for several years now.

If we kept this up, she lectured, we would never finish the course.

The estate kept this up for two years until forced removals stopped.

With nine thousand missiles, Hamas could have kept this up for many months.

He kept this up the rest of season, and I was certainly transforming into a better basketball player.

"We cannot keep this up".

How long can he keep this up?

I could never keep this up".

Can Lithuania keep this up?

How long can I keep this up?