ZERO: The river (freeze) if it (be) very cold.
The river freezes if it is very cold.
ZERO: My flatmate (clean) really well if she (clean) the house.
My flatmate cleans really well if she cleans the house.
ZERO: If people (eat) too many sweets, they (get) fat.
If people eat too many sweets, they get fat.
ZERO: David (be) sick if he (drink) milk.
David is sick if he drinks milk.
ZERO: I (feel) good the next day if I (go) to bed early.
I feel good the next day if I go to bed early.
ZERO: If Julie (not/wear) a hat, she (get) sunstroke.
If Julie doesn't wear a hat, she gets sunstroke
ZERO: If you (smoke), you (get) yellow fingers.
If you smoke, you get yellow fingers.
ZERO: Lots of people (come) if Jenny (have) a party.
Lots of people come if Jenny has a party.
ZERO: If children (play) outside, they (not/become) overweight.
If children play outside, they don't become overweight.
ZERO: My daughter (not/pass) her exams if she (not/work) hard.
My daughter doesn't pass her exams if she doesn't work hard.
ZERO: I (like) to visit the museums if I (be) in a new city.
I like to visit the museums if I am in a new city.
ZERO: I (cycle) to work if the weather (be) fine.
I cycle to work if the weather is fine.
FIRST: If children (not/eat) well, they (not/be) healthy.
If children don't eat well, they aren't healthy.
ZERO: If I (not/speak) to Kanye, he (get) annoyed.
If I don't speak to Kanye, he gets annoyed.
ZERO: If my husband (cook), he (burn) the food.
If my husband cooks, he burns the food.
ZERO: If I (wake up) late, I (be) late for work.
If I wake up late, I'm late for work.
ZERO: If you (heat) ice, it (melt).
If you heat ice, it melts.
ZERO: If you (mix) water and electricity, you (get) a shock.
If you mix water and electricity, you get a shock.
ZERO: Everybody (be) grumpy if it (rain) a lot.
Everybody is grumpy if it rains a lot.
ZERO: She (buy) expensive clothes if she (go) shopping.
She buys expensive clothes if she goes shopping.