As I wanted to learn the English vocabulary used in the song, I searched the lyrics
 Students should find a language exchange group to practice speaking with other learners
 Because of his busy schedule, Mr. Hải took an online English course
 Because English is important in the job market, more and more people are learning it
 The teacher checked out some fun activities to keep her English lessons engaging for students
 Mai always looks up new words and writes them down in her notebook
 While I was surfing the Internet, I came across an article on how to learn English effectively
 Before you start learning English, it is important that you find out what your level of English is right now

Many students in Vietnam volunteer to help the poor in many ways.

Life expectancy has increased because more people have better diets

Off went my brother without saying a word

Câu đảo ngữ với các phó từ : Phó từ + V + S + O

Eat less high-fat food to keep you from getting fat

Đặt `A=1.2+2.3+3.4+...+9.10`

ta có:

`3A= 1.2.3 + 2.3.3 + 3.4.3 +...+ 9.10.3`

`3A= 1.2.3 + 2.3.(4-1) + 3.4.(5-2)+...+9.10.(11-8)`

`3A= 1.2.3 + 2.3.4-1.2.3 + 3.4.5-2.3.4+..+ 9.10.11-8.9.10`

`3A= 0+0+..+9.10.11`

`A= (9.10.11)/3`

`A= 330`

Vậy `A=330`

I)

2 a stick of chalk

3 a match of football

4 a cube of sugar

5 a piece of meat

6 a rumble of thunder

II) 

1. custom

a) custom

b) customs

2. wood

a) woods

b) wood

III) 

1. tr..

2. ex-...

3. super...

4. co...

5. under...

6. non-...

7. sub...

IV) 

1.Publish -> publication
2.Loyal--> loyalty
3.Reject-->rejection

1C

2C

3A

36 My dad and I often go cycling in the evening

37 There isn't much traffic and entertainment in my village

38 I want to try knitting because I would like to make dresses for my sister

39 I prefer to play tug of war because it is more relaxing than folk games

40 There are a lot of facilities in the city, but there isn't enough fresh air

41 My English class runs from 9 o'clock to 11 o'clock

42 Anna prefers swimming in the pool to swimming in the sea

43 My uncle wants to leave the city for the country because there is too much pollution in the city

44 What does Hawaii have?

45 What do you usually do with your best friends?