Infinitives & -ing forms

Despite the likely opposition from local residents, the council has suggested … the main road going through the village. (widen)

Since the birth of their fourth child, the Wilsons can’t afford … on holiday this summer. (go)

All the children stopped … as soon as the teacher walked into the room.

Both of these are possible:

That sounds awful! The piano really needs tuning.

That sounds awful! The piano really needs to be tuned.

Both of these sentences are equally acceptable:

His refusing to help was very disappointing.

His refusal to help was very disappointing.

Which of these (more than one) are correct / possible?