I'm here to help you with your studies, and I appreciate your interest in completing exercises related to language and science. Let’s go through your exercises step by step!
Exercise 1: Must or Can't
A Which two planets are hotter than Earth? B It must be Mercury and Venus because they're nearer to the Sun.
A And which planet is hotter, Mercury or Venus? B It must be Mercury. Again, because it's nearer the Sun.
A No, actually, you're wrong. Venus is hotter because it has an atmosphere which keeps the heat in.
A Is Earth the biggest planet? B No, it can't be. It's much smaller than Jupiter or Saturn. I think the biggest planet must be Jupiter.
A Which planet is furthest away from the Sun, Jupiter or Neptune? B It can't be Jupiter because it is next to Mars. It must be Neptune.
A Is Neptune the coldest planet, then? B Yes, I think it must be.
Exercise 2: Could/May/Might, Must, and Can't
ANN What's the matter? It can't be time to get up. It's still dark.
LUCY I heard a strange noise. There's someone or something outside the tent. Can't you hear it?
ANN I can't hear anything. You must be dreaming. Go back to sleep!
LUCY I'm sure I heard something. I suppose it might be a cow or sheep, but there weren't any animals in the field when we put up the tent. I'm going outside to check. Ann, look, there's a light over there by the trees.
ANN There can't be! We're in the middle of the country and there aren't any buildings in sight.
LUCY Well, what's that, then?
ANN I don't know! It might be a motorbike or something like that.
LUCY But the road's over there on the other side. And can you hear a car or a motorbike?
ANN No, but what else could it be?
LUCY Strange noises and lights... Well, it might be visitors from another planet.
ANN No, it can't be. There is no life on other planets! It's probably the farmer. He must be checking his cows.
LUCY Yes, but what if it isn't?
Exercise 3: Fill in the Blanks with Correct Terms
- The Sun isn't a planet, it is a star.
- Our Sun and its eight planets are called the solar system.
- Scientists think there may be water on the surface of Gliese 581 g.
- Gravity is the power that pulls things towards the center of the Earth.
- Eight planets orbit the Sun.
- Planets without an atmosphere can't support life.
- Astronomers have discovered a planet similar to Earth.
- A light year is the distance that light can travel in one year.
Crossword and Missing Letters
- The eighth planet from the Sun: Neptune.
- There may be life on other planets.
- An enormous group of stars and planets: Galaxy.
- Space and everything that exists in it: Universe.
- Astronomers use one to look at the stars: Telescope.
- A machine which can do things on its own; it sometimes looks like a human: Robot.
Words with Missing Letters:
- Rocket (roky, roket) Mercury.
- Galaxy (alaxy) Gravity (ravity) Regions (reions).
- Liquid (liuid) Quarter (uarter) Question (uestion).
- Surface (suface) Universe (univese) Orbit (obit).
- Telescope (telecope) Solar system (solar sytem) Star (tar).
- Scientists (sientists) According (acording) Clouds (louds).
Gerund Sentences:
- I can't stand studying late at night.
- I really want to give up watching TV.
- I don't feel like going out today.
- I never get fed up with reading books.
- Yesterday I succeeded in finishing my project.
- I'm quite good at playing the guitar.
- I'd like to start learning a new language.
- I couldn't help laughing at the joke.
Infinitive Sentences:
- I'd really like to travel the world.
- At the weekend I hope to relax at home.
- Yesterday I agreed to help my friend.
- Today our teacher taught us to write essays.
- My parents expect me to do well in school.
- I usually help to organize events.
- I don't want to miss the concert.
- I sometimes pretend to be someone else.
Feel free to reach out if you have more questions or need further clarification!
