Language Focus

Scientists claimed that there __________ eight planets in our solar system.

1. are 
2. were
3. was   
4. is

This water is __________ poisonous that people here can’t drink.

1. too   
2. so 
3. enough 
4. such

I love __________ at pictures of the galaxy very much.

1. seeing 
2. watching
3. looking
4. viewing

Space __________ is the main vehicle for astronauts to travel on the Moon.

1. buggy 
2. system 
3. surface
4. planet

I’m curious about the __________ space of the Earth.

1. alien 
2. weightless
3. outer
4. poisonous

The atmosphere on Mars is quite similar __________ that on Earth.

1. to 
2. on 
3. at   
4. with

Have you ever seen a flying __________?

1. danger     
2. saucer
3. outer   
4. painter

Neil Armstrong is considered as the first person __________ on the Moon.

1. step 
2. steps   
3. stepping   
4. to step

I can’t stand __________ with such a talkative person like her.

1. talking
2. talk
3. talked 
4. to talk

There have been some traces proving the __________ of aliens.

1. exist 
2. existence
3. existing 
4. existed

It was so kind of him __________ me when I was homeless

1. accommodate   
2. to accommodate 
3. accommodating 
4. accommodated

Our lives are in __________ because of pollutions

1. danger   
2. saucer
3. surface 
4. system

The astronaut wears a __________ to protect him from the dangers of being outside in space.

1. spacesuit   
2. swimsuit
3. suit
4. sleeping bag

Scientists think it is possible to send humans on a __________ to Mars by the 20130s.

1. weight
2. buggy   
3. mission 
4. trace

“What subject do you find the most difficult?” My mother asked.

⇒ My mother asked what subject ____________ the most difficult.

1. do you found 
2. I found 
3. did I find
4. did I found