Choose the right words to complete the sentences.

Choose the correct option.

My leg is broken. If only I [was|had been] more careful while riding the bike.

I can't help you, I'm too busy. If only I [had|had had] more free time!

The project wasn't realised due to a lack of money. If only we [collected|had collected] more donations!

Lola finds it difficult to make friends. If only she [was|had been] more self-assured.