她一直不停地问我问题。

She ___kept ___on ___asking me questions the whole time.

我一直在到处找他，但还是没找到。

I ___kept ___on ___looking for him everywhere, but I still haven't found him.

他反复练习钢琴，直到弹对为止。

He ___kept ___on ___practicing the piano until he got it right.