If you _______ (leave) milk out of fridge, it ______ (go) off.
If you leave milk out of fridge, it goes off.
If you ___ (get) up early, you ___ (be) on time.
If you get up early, you will be on time.
If I ____ (meet) my favourite pop star, I ___ (be) excited a lot.
If I met my favourite pop star, I would be excited a lot.
If you ____ (add) two and three, you ____ (get) five.
If you add two and three, you get five.
If you_____ (go) to San Francisco, you ___ (see) the Golden Gate Bridge.
If you go to San Francisco, you will see the Golden Gate Bridge.
If I ____ (see) somebody cheating in the test, I ___ (not / report) them to the teacher.
If I saw somebody cheating in the test, I wouldn't report them to the teacher.
If food companies ____ (not / add) chemicals to food, it ____ (can / not) be stored for a long time.
If food companies don't add chemicals to food, it can't be stored for a long time.
You ______ (not / take) part if you ____ (not / be) ready tomorrow.
You won't take part if you aren't ready tomorrow.
I ___ (can / ask) my friend for advice if I ___ (have) some difficulties.
I could ask my friend for advice if I had some difficulties.
Metal doesn't change its state (if / unless) it's melted.
Metal doesn't change its state unless it's melted.
It ____ (can) be difficult to solve this problem if you _____ (not / learn) this rule.
It can be difficult to solve this problem if you don't learn this rule.
If I _____ (be) a bird, I _______ (be) an eagle.
If I were a bird I would be an eagle.
If you ____ (not / heat) water, it _____ (not / boil).
If you don't heat water, it doesn't boil.
He ____ (not / be) able to win unless he ___ (practice) a lot.
He won't be able to win unless he practices a lot.
If athletes ____ (take) performance-enhancing drugs, many current records ____ (be) broken.
If athletes took performance-enhancing drugs, many current records would be broken.