1 It’s a pity that you didn’t tell us that you were leaving. (WISH)

-> I wish you had told us that you were leaving.

2 I regret not going to university when I was younger. (GONE)

-> I wish I had gone to university when I was younger. 

3 I’ve always wanted to have the ability to speak a foreign language really well. (COULD)

-> I wish I could speak a foreign language really well. 

4 It’s a real shame we didn’t take any photos at that amazing party. (ONLY)

-> If only we had taken photos at that amazing party.

$1$. I wish you had told us that you were leaving

$2$. I wish I had gone to university when I was younger

$3$. I wish I could speak a foreign language really well

$4$. If only we had taken photos at that amazing party