helpful with OR to

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

Would you tell mee which is correct?

They were very helpful with us.

They were very helpful to us.

Thanks again.
Liza

2

They were very helpful to us.

3

I suppose if the preposition “with” meant “regarding/in regard to” there, the collocation would be fine. Usually, I hear “they were helpful to us” or just “they were helpful”