. If the temperature falls below 0 °C, water ... into ice * turned
turns
turn
will turn
2. If you add sugar to a cup of tea, it ... sweeter. *
tasted
taste
tastes
will taste
3. If you heat water up to 100 °C, it ... . *
boils
boil
boiled
will boil
4. The grass when it *
grow / rains
will grow / rain
grows / rains
5. When we a movie, we popcorn. *
watches / eat
watch / eats
watch / eat
will watch / eat
6. If you two and two, you four. *
add / get
add / gets
add / will get
7. They video-games if they any homework. *
play / will have
play / don't have
plays / have
8. She to visit the museums if she in a new country. *
likes / is
likes / will be
likes / be
9. Vasya always expensive clothes if he shopping. *
buy / go
buy / will go
buys / goes
10. If it , we an umbrella. *
rains / take
rain / takes
rain / take

1. If the temperature falls below 0 °C, water turns into ice.
Explanation: When the temperature drops below zero degrees Celsius, water changes its state from a liquid to a solid and forms ice.

2. If you add sugar to a cup of tea, it tastes sweeter.
Explanation: Adding sugar to tea enhances its flavor and makes it taste sweeter.

3. If you heat water up to 100 °C, it boils.
Explanation: When water is heated to its boiling point of 100 degrees Celsius, it starts to boil and turns into steam.

4. The grass grows when it rains.
Explanation: Rainfall provides water and nutrients to the grass, which promotes its growth.

5. When we watch a movie, we eat popcorn.
Explanation: Popcorn is a popular snack that people often enjoy while watching movies.

6. If you add two and two, you get four.
Explanation: Adding the numbers two and two together results in the sum of four.

7. They play video-games if they don't have any homework.
Explanation: If someone doesn't have any homework, they can spend their time playing video games as a form of entertainment.

8. She likes to visit the museums if she is in a new country.
Explanation: When she finds herself in a new country, she enjoys exploring museums as a way to learn about the local culture and history.

9. Vasya always buys expensive clothes if he goes shopping.
Explanation: Whenever Vasya goes shopping, he tends to purchase expensive clothes for himself.

10. If it rains, we take an umbrella.
Explanation: When it is raining, it is advisable to bring an umbrella to stay dry.