Choose the correct options

First Conditional is used to express situations that are very likely to happen in the future.

If-clause	Main clause
If/when + Present Simple	Future Simple, Imperative, can/must/may, etc. + bare infinitive

If the weather is good tomorrow, we will go for a picnic.

If you buy a new book, lend it to me for a week.

When she finishes mixing vegetables, she can add some oil.

1. If I [will have|have] a chance, I always [will go|go] for a walk after school.
2. I [will help|help] you with moving house if I [will have|have] some time at the weekend.
3. I [feed|will feed] your cat when you [are|will be] on holiday next week.
4. Fish die if people [will dump|dump] toxic waste into the river.
5. My teacher will get angry if I [won't|don't] hand in my essay tomorrow.
6. I will not sleep well [if|unless] we air the room.
7. I will feel unhappy if I [won't|don't] get a puppy for my birthday.
8. If Sandy [won't|doesn't] finish the project on time, she will have to work extra hours.
9. If I [will save|save] up enough, I [go|might go] to France next summer.
10. I [have|will have] a gap year if my parents [let|will let] me.