But you just keep at it and hope for the best.

He asked if I was going to keep at it.

This is a lot to deal with, but keep at it.

But he kept at it and did a great job.

I tried to, and for a while we both kept at it.

I kept at it, and finally got to my feet.

She could think of nothing else to do but to keep at it.

Soon I was coming and she just kept at it the whole time.

People can become used to anything, if they're kept at it long enough.

Still, they kept at it before she left for Europe.

So long as talk with Earth was possible, he'd kept at it.

I kept at it until a year after college, when the money ran out.

"Keep at it and you'll end up with a fine house of your own one day."

We can keep at it for a week or a month, but it's just not going to happen.

But neither of us can keep at it much longer.

I want you to promise me you'll keep at it.

Keep at it, even if you slip up along the way.

"We'll just have to keep at it until we get so me."

She got the impression he could keep at it for hours, maybe days.

We started talking shop and kept at it for more than an hour.

But if you keep at it, over time the population should drop.

But they have kept at it for nearly 90 increasingly serious years.

But the prosecutor has kept at it for two years.

He was trying to convince him of something and kept at it.

He kept at it for over four hours, and got very enthusiastic.