Re: can/could
Yoong Liat wrote:I asked the question because I thought 'wish' was used in the hypothetical sense. E.g. I wish I were a king.
OK I agree that we often use the verb "wish" about impossible things or things that are not likely to happen, so perhaps "could" would be more appropriate for either past or present, but you wrote "one day" which takes us from the hypothetical to the possible. We use the verb "hope" when something is possible, so maybe you should write either
We all hope that, one day, we can get back at her.
-or-
We all hoped that, one day, we could get back at her.