III. Choose the best answer to complete the sentences.
1. In 1957 the Soviet Union launched the first satellite to _______ the Earth.
A. move B. orbit C. travel D. fly
2. If _______ existed and were living out there, what types of signals would they send us?
A. scientists B. astronauts C. aliens D. explorers
3. Researchers made the amazing findings of _______ of water on Mars.
A. footprints B. trips C. paths D. traces
4. We can only see _______ in the sky at night because during the day the sunlight is so bright.
A. the Earth B. stars C. aliens D. UFO
5. I think the availability of liquid water is the most important factor that makes a planet _______.
A. habitable B. unsuitable C. dead D. impossible
6. The _______ is the centre of the Solar System, making up around 99.86% of its mass.
A. Earth B. Sun C. Moon D. Mars
7. A _______ is an object in space that orbits or circles around a bigger object.
A. comet B. meteor C. planet D. satellite
8. Astronauts can’t breathe in _______ outer space, so they have to wear a spacesuit with an oxygen tank.
A. weightless B. thoughtless C. powerless D. airless
9. Ail of the planets in our Solar System, except for _______, were named after Greek and Roman gods.
A. Neptune B. Jupiter C. Earth D. Venus
10. If we don’t take _______ care of planet Earth, it mightn’t be able to support human life someday.
A. appropriate B. essential C. special D. voluntary

Question

III. Choose the best answer to complete the sentences.
1. In 1957 the Soviet Union launched the first satellite to _______ the Earth. 
A. move 		B. orbit			C. travel 		D. fly
2. If _______ existed and were living out there, what types of signals would they send us? 
A. scientists 		B. astronauts 		C. aliens 		D. explorers
3. Researchers made the amazing findings of _______ of water on Mars.
A. footprints 		B. trips 		C. paths		D. traces
4. We can only see _______ in the sky at night because during the day the sunlight is so bright.
A. the Earth 		B. stars			C. aliens		D. UFO
5. I think the availability of liquid water is the most important factor that makes a planet _______. 
A. habitable 		B. unsuitable		C. dead		D. impossible
6. The _______ is the centre of the Solar System, making up around 99.86% of its mass. 
A. Earth		B. Sun			C. Moon		D. Mars 
7. A _______ is an object in space that orbits or circles around a bigger object. 
A. comet		B. meteor		C. planet		D. satellite 
8. Astronauts can’t breathe in _______ outer space, so they have to wear a spacesuit with an oxygen tank. 
A. weightless 		B. thoughtless 	C. powerless 		D. airless 
9. Ail of the planets in our Solar System, except for _______, were named after Greek and Roman gods. 
A. Neptune 		B. Jupiter		C. Earth		D. Venus 
10. If we don’t take _______ care of planet Earth, it mightn’t be able to support human life someday. 
A. appropriate 	B. essential		C. special		D. voluntary

Accepted Answer

{"userId":5384252,"userName":"Hoà Nguyễn"} Here are the best answers to complete the sentences from the image:

In 1957 the Soviet Union launched the first satellite to orbit the Earth.
→ B. orbit
If aliens existed and were living out there, what types of signals would they send us?
→ C. aliens
Researchers made the amazing findings of traces of water on Mars.
→ D. traces
We can only see stars in the sky at night because during the day the sunlight is so bright.
→ B. stars
I think the availability of liquid water is the most important factor that makes a planet habitable.
→ A. habitable
The Sun is the centre of the Solar System, making up around 99.86% of its mass.
→ B. Sun
A satellite is an object in space that orbits or circles around a bigger object.
→ D. satellite
Astronauts can’t breathe in airless outer space, so they have to wear a spacesuit with an oxygen tank.
→ D. airless
All of the planets in our Solar System, except for Earth, were named after Greek and Roman gods.
→ C. Earth
If we don’t take essential care of planet Earth, it mightn’t be able to support human life someday.
→ B. essential

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III. Choose the best answer to complete the sentences. 1. In 1957 the Soviet Union launched the first satellite to _______ the Earth. A. move B. orbit C. travel D. fly 2. If _______ existed and...

III. Choose the best answer to complete the sentences. 1. In 1957 the Soviet Union launched the first satellite to _ the Earth. A. move B. orbit C. travel D. fly 2. If _ existed and...