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.
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 light the fire, the room will stay cold.
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