1. have => had

2. whose => that 

3. However => Therefore 

4. more => most

Đáp án C

Đáp án là C.

VIII. Find a mistake in the four underlined parts of each sentence and correct it.
1. If you don’t study your mathematics, you can’t be able to do the exercises.

=> won't
2. My niece can read by the time she was four years old.

 => could
3. Most ants could lift objects that are ten times heavier than their own bodies.

=> can
4. Bob was in an accident, but he won’t be able to remember how he had hurt himself.

=> can't
5. If robots will do all of our work, we will have nothing to do.

=> bỏ
6. We couldn’t bought any bread because the bakery was closed.

=> buy
7. Mona isn’t busy today and she could help her mother at home.

could => can
8. Will you able to carry all the shopping back home on your bike?

=> be able
9. Could you to ride a bike when you were in the fifth grade?

=> bỏ
10. We will be able to play football because it is raining heavily.

will => won't
IX. Complete each sentences so it means the same as the sentences above.
1. I don’t have a robot in my house.
There isn’t any robots in my house
2. I won’t be able to do everything myself unless I have a modern robot.
If I don’t have a modern robot, I won't be able to do everything myself 
3. Minh likes teaching robots very much.
Minh is very interested in teaching robots 
4. My sister can swim well.
My sister is a good swimmer
5. This radio is better than my old one.
=> My old radio is not as good as this one
6. This robot is capable of cooking a variety of different meals. (can)
This robot can cook a variety of different meals
7. My computer didn’t work last night, so I couldn’t email you. (because)
 I Couldn't email you because my computer didn't work last night
8. You should study hard, or you won’t pass the exam. (will)
If you study hard, you will pass the exam

VIII. Find a mistake in the four underlined parts of each sentence and correct it.
1. can’t -> won't
2. can -> could
3. could -> can
4. won’t -> wouldn't
5. will do -> do
6. bought -> buy
7.could -> can
8. able -> be able
9. to ride -> ride
10. will -> won't
IX. Complete each sentences so it means the same as the sentences above.
1. There isn’t any robot in my house.
2. If I don’t have a modern robot, I won’t be able to do everything myself.
3. Minh is very interested in teaching robots.
4. My sister is a good swimmer.
5.  My old radio isn't so good as this one.
6. This robot can cook a variety of different meals.
7. I couldn’t email you because my computer didn’t work last night.
8. If you study hard, you will pass the exam.

VIII. Find a mistake in the four underlined parts of each sentence and correct it.
1. If you don’t study your mathematics, you won't be able to do the exercises.
2. My niece can read since she was four years old.
3. Most ants can lift objects that are ten times heavier than their own bodies.
4. Bob was in an accident, but he wasn't able to remember how he had hurt himself.
5. If robots will=> bỏ do all of our work, we will have nothing to do.
6. We couldn’t buy any bread because the bakery was closed.
7. Mona isn’t busy today and she can help her mother at home.
8. Will you be able to carry all the shopping back home on your bike?
9. Could you to=> bỏ ride a bike when you were in the fifth grade?
10. We won't be able to play football because it is raining heavily.
IX. Complete each sentences so it means the same as the sentences above.
1. I don’t have a robot in my house.
There isn’t a robot in my house ______________________________________________________
2. I won’t be able to do everything myself unless I have a modern robot.
If I don’t have a modern robot, I won’t be able to do everything myself ___________________________________________________
3. Minh likes teaching robots very much.
Minh is very interested in teaching robots ____________________________________________
4. My sister can swim well.
My sister is a good swimmer ______________________________________________________
5. This radio is better than my old one.
=> My old radio is worse than this one _________________________________________________
6. This robot is capable of cooking a variety of different meals. (can)
This robot  can cook a variety of different meals_____________________________________________
7. My computer didn’t work last night, so I couldn’t email you. (because)
 I couldn’t email you because my computer didn’t work last night _____________________________________________________________
8. You should study hard, or you won’t pass the exam. (will)
If you study hard, you will pass the exam ________________________________________________________

Use UNLESS instead of IF.

1. If you are not careful, you will cut yourself with that knife.

UNLESS you are careful, you will cut yourself with that knife.

2. If you do not like this one, I'll bring you another.

UNLESS you like this one, I'll bring you another.

3. I'll not be able to do any work if I do not have a quiet room.

UNLESS I have a quiet room, I'll not be able to do any work

4. If she does not hurry, she'll be late.

UNLESS she hurries, she'll be late.

5. If we had more rain, out crops would be better.

UNLESS we had more rain, out crops wouldn't be better.

6. The crops would be have been ruined in the flood had risen higher.

UNLESS the flood had risen higher, The crops wouldn't be have been ruined

7. If you had not sneezed, he wouldn't have known that we were there.

UNLESS you had sneezed, he wouldn't have known that we were there.

8. If she did her hair differently, she would look quite nice.

UNLESS she did her hair differently, she would look quite nice.

9. If John had played for our football team, we would not have lost the game.

UNLESS John had played for our football team, we would have lost the game.

10. If I won a big prize in a lottery, I'd give up my job.

UNLESS I won a big prize in a lottery, I'd not give up my job.

There is one mistake in each sentence. Find and correct it.  

Robots will wake you up every morning and do -> make your breakfast.  

We will -> won't be able to play football because it is raining heavily. 

What do you think of -> about the role of robots in the future?  

Some people believe that robots will play a -> an important role in our lives.  

Could you to ride -> ride a bike when you were in the fifth grade?   

If we will go -> go shopping tomorrow, I’ll buy some reusable shopping bags.   

Will you able to -> be able to carry all the shopping back home on your bike? 

Using a lot of plastic bags are -> is bad for the environment.  

Mona isn’t busy today and -> so she could help her mother at home.  

I can write with my right -> left hand. I’m left-handed.  

We couldn’t bought -> buy any bread because the baker’s was closed. 

I’m sorry I won’t able to -> be able to go to your party on Friday.  

If robots will do -> do all of our work, we will have nothing to do.  

In the future, robots will do all the housework instead -> instead of us.

Đáp án: C

1. Would people be able to fly if they have =>had feathers instead of hair?

A B C D

2. What about use=>using public buses instead of motorbikes to reduce exhaust fume?

A B C D

3. We were young and inexperienced. However => so, we made a lot of mistakes.

A B C D

13- Lisa would find the milk if she looked for it in the fridge. 

14- You wouldn't have so many accidents if you drove more slowly. 

15-If they hung that picture lower, people would be able to see it. 

16- If I became very rich, I would build a hospital for the poor. 

17-If I had a typewriter, I could type it myself 

18-You could make much progress if you attended class regularly. 

III Complete the sentences : 

19-Tom doesn't visit his parents 

His parents aren't visited by Tom 

20- I don't hang these old pictures in the living room. 

These old pictures aren't hung in the living room 

21- The students discuss the pollution problems each week 

The pollution roblems are discussed by the students each week 

22- She showed her ticket to the airline agent, 

Her ticket was showed to airline agent 

23 He lends his friend his new shoes. 

His new shoes are lent to  his friend