Wood doesn't burn. There is no fire. (NO) => Wood doesn’t burn if there ____________________.

It would be nice to have lunch outside but it’s raining, so we can’t. (RAINING) => If it ______________________, it would be nice to have lunch outside

You heat water to 100˚C. It boils. (IT) => If you heat water to 100˚C, _________________

I was so hungry because I didn’t eat anything. (EATEN) => If ____________________ something, I wouldn’t have been so hungry.

You should go swimming regularly because that’s a good way to get fit. (SHOULD) => If you want to get fit, you _______________________ regularly.

We don’t see you very often because you live so far away. (NOT) => We would see you more often if you _______________ so far away

I can’t take a lot of exercise because I don’t have enough free time. (COULD) => If I had more free time, I __________________ a lot of exercise.

Karen wasn’t injured in the crash, because fortunately, she was wearing a seat belt. (BEEN) => If Karen ______________________________ a seatbelt, she might have been injured in the crash.

Dad didn’t do well at school, so he couldn’t go to university. (HAD) => Dad could go to university if he ______________________ at school.

We’d like to go on holiday, but we can’t afford it. (COULD) => We would go on holiday if we ____________________ it.