Prepare 8. Unit 16

To start the experiment, you need to ________ air into the balloon.

Please ________ the end of the balloon so the air doesn't escape.

If you ________ a balloon on your jumper, it gets a negative charge.

Before you peel the egg, you must ________ it for four minutes.

________ the bottle in a towel and shake it well. 

Be careful when you ________ the hot water into the glass bottle.

To mix the ingredients properly, you need to ________ the container for a minute.

First, ________ the glasses with water to the very top. 

We need to ________ out an experiment to see if the theory is correct. 

I can't ________ out the answer to this difficult maths question. 

If you ________ up 15 and 10, you get 25.

The scientists were lucky the lab didn't ________ up during the accident. 

Please ________ up the paper into small strips for the project. 

I need to ________ up the total number of students in the class. 

It's difficult to ________ out how the machine works without instructions.

The teacher asked us to ________ out the task in pairs.

When the sun goes down, it ________ dark. 

If you ________ red and green, you get yellow. 

Plants die if they ________ enough water.

My teacher ________ angry if I don't do my homework. 

If you freeze water, it ________ to ice. 

If you ________ oil on water, it floats.

If it rains later, we ________ to the park.

You ________ wet if you don't take an umbrella. 

If I ________ the candles, everyone will sing "Happy Birthday." 

The gift ________ lovely if we wrap it in this gold paper.

What ________ if we don't stop climate change?

If you ________ off your shoes, the mosquitoes will bite your feet!

If we ________ now, we will be late for the movie. 

Will you ________ me a postcard if you go to Italy?

If he ________ the truth, he will be very upset. 

We will go to the beach ________ it rains. 

The experiment won't work ________ you follow the instructions exactly.

________ you set off soon, you will miss the bus. 

You'll break your phone ________ you're more careful with it. 

I'll make a cake later ________ we have some eggs.

________ we train harder, we’ll lose the match. 

The ice will melt ________ you put it back in the freezer. 

________ I light the fire, the room will stay cold. 

Life will end ________ we stop climate change.