I. Fill in each blank with the appropriate form of the word in brackets.
1. Iceland is considered the most ______peaceful____country in the world. (peace)
2. A____nomadic___lifestyle has its advantages and disadvantages. (nomad)
3. My brother has been a stamp__collector_____for several years. (collect)
4. It is a/an_____inconvenient___place to hold a picnic because it is too far from the road. (convenience)
5. Drinking water in some areas may be__unsafe____.(safe)
6. During my stay in the village, I was_____friendly___with several local farmers. (friend)
7. Encouraging children to eat and drink___ healthy___is very important. (health)
8. Local people in the village often wear their___traditional____costumer during the festivals. (tradition)
9. Please give__generosity____to that charity to help the homeless after the flood. (generous)
10. The baby slept very___soundly____because the bed was really comfortable. (sound)
II. Rewrite each sentence so it has the same meaning. Use a comparative form of the adjective in brackets.
1. Tim is older than Sarah.(young)
Sarah is younger than Tim

2. Our house is large than yours.(small)
Your house is smaller than our house.
3. Bill is not as tall as David.(short)
Bill is shorter than David
4. Jack's marks are worse than mine.(good)
My marks is better than Jack's marks
5. This book is the same price at the one.(expensive)
That book is the most expensive.

6. Your bike is slower than mine.(fast)
My bike is faster than yours.
III. Rewrite the sentences of comparison.
1. Her old house is bigger than her new one.
-> Her new house is smaller than her old house.
2. No one in my class is taller than Peter.
-> Peter is the tallest people in my class

3. The black dress is more expensive than the white one.
-> The white dress is cheaper than the black one.
4. According to me, English is easier than Maths.
-> According to me, Maths is harder than English.
5. No one in my group is more intelligent than Mary.
-> Mary is the most intelligent people in my group
6. No river in the world is longer than the Nile.
-> The Nile the longest river in the world

7. Mount Everest is the highest mountain in the world.
-> No mountain taller than Mount Everest.
8. This is the first time I have ever met such a pretty girl.
-> She is  the pretiest girl I have ever met.
9. This computer works better than that one.
​-> That computer works worse than this one.

I. Fill in each blank with the appropriate form of the word in brackets.

1. Peaceful 

2. Nomadic

3. Collection 

4. Inconvenient 

5. Unsafe

6. Friendly

7. Healthily 

8. Traditional 

9. Generosity 

10. Soundly

II.Rewrite each sentence so it has the same meaning. Use a comparative form of the adjective in brackets.

1. Sarah is younger than Tim.

2. Your house is smaller than our house.

3. Bill is shorter than David.

4. My marks are better than Jack's marks.

5. That book is as expensive as this book.

6. My bike is faster than your bike.

III.Rewrite the sentences of comparison.

1. Her new house isn't as big as her old house .

2. Peter is the tallest student in my class.

3. The white dress is cheaper than the black one.

4. According to me, Maths is more difficult than English .

5. Mary is the most intelligent in my group

6. The Nile is the longest river in the world .

7. No mountain in the world is higher than Mount Everest .

8. She is the prettiest girl I have ever met.

9. That computer works worse than this one.

7 yên 90 kg = ..... kg

560 hg = ........ kg

4 phút = 240 giây

1/3 phút = 20 giây

1/5 thế kỉ = 20 năm

1/4 thế kỉ = 25 năm

1/6 giờ = 600 giây

1/3 ngày = 8 giờ

1800dm² 40000cm² = 22 m²

7 yến 90kg = 790kg

560hg = 56kg

1, Would you to go out . No , thanks . I'd to stay ............at........home

2, If you're going to watch the football , you count me .....but.........I don't football

3,I've put ...................2 kg in the last month

4, The japanese eat headthily , she the live .............in.......a long time 

5, Sitting too close ...........on........the TV hurls your eyes

6, Becareful .......................what you eat and drink 

7. She runs six miles every day to help keep hersely .........................shape

8, Watching TV too mich isn't good ......in............your eyes a long time

1, Would you to go out . No , thanks . I'd rather stay .......at.............home

2, If you're going to watch the football , you count me ....out..........I don't football

3,I've put .....on..............2 kg in the last month

4, The japanese eat heathily , so the live ...for.................a long time 

5, Sitting too close ....to...............the TV hurls your eyes

6, Becareful ......with.................what you eat and drink 

7. She runs six miles every day to help keep herself ....in.....................shape

8, Watching TV too mich isn't good .....for.............your eyes a long time

Để \(\left(n+8\right)⋮\left(n+5\right)\) thì

\(\left(n+8\right)-\left(n+5\right)⋮\left(n+5\right)\)

\(\Rightarrow\)\(3⋮\left(n+5\right)\)

\(\Rightarrow\)​​\(\left(n+5\right)\inƯ\left(3\right)\)

\(\Rightarrow\)\(\left(n+5\right)\in\left(1;-1;3;-3\right)\)

\(\Rightarrow\)\(n\in\left(-4;-6;-2;-8\right)\)

Để \(\left(16-3n\right)⋮\left(n+4\right)\) thì

\(\left(16-3n\right)+\left(n+4\right)⋮\left(n+4\right)\)

\(\Rightarrow\)\(\left(16-3n\right)+3\left(n+4\right)⋮\left(n+4\right)\)

\(\Rightarrow\)\(16-3n+3n+12⋮\left(n+4\right)\)

\(\Rightarrow\)\(28⋮\left(n+4\right)\)

\(\Rightarrow\)\(\left(n+4\right)\inƯ\left(28\right)\)

\(\Rightarrow\)\(\left(n+4\right)\in\left\{\pm1;\pm2;\pm4;\pm7;\pm14;\pm28\right\}\)

\(\Rightarrow\)\(n\in\left\{-3;-4;-2;-6;0;-8;3;-11;10;-18;24;-32\right\}\)