I wish you are not indeed angry with me for harping so much on one string.
Nothing else could have such a fatal facility for harping on one string.
"I don't see the use of your harping on that affair," said Hardman angrily.
I can't see why you keep on harping on his fitness for the place.
Digging and mining will be done; so will harping and singing.
This was a danger, ...