1. Good morning class, what day is it today ?

2. Hello Mis Hien, what day is it today ?

3. Hello Mis Hien, today is Wednesday.

4. Today we have Math anh Vietnamese.

5. Today is Sunday I watch tivi at home.

Chúc bạn học tốt

1. Hi guys. How are you today?

2. We are fine, thank you. And you?

3. I'm fine. Thank you

4. Hello. My name's Hoa. I'm 12 years old

5. Hi dad,mom. How are you?

6. Hi. This is Nga. She is my friend. She's in class 6

7. I'm Phong and this is Linh

Mong bn k cho mk, mk cũng chưa chắc đúng

1. Hello guys. How are you doing today?

2. We are fine, thank you. How about you?

3. I am still fine. Thank you

4. Hi sister, my name is hoa. I am 12 years old

5. I greet my parents. How are you parents?

6. I greet you. This is Nga. She is my friend. She is in 6th grade.

7. I am Phong and this is Linh.

Hello guys. How are you doing today?

2. We are fine, thank you. How about you?

3. I'm still fine. Thank you.

4. Hi, my name is Hoa. I am 12 years old.

5. I greet my parents. How are your parents?

6. I greet you. This is Nga. She is my friend.She is in 6th grade.

7. I am Phong and this is Linh.

a, When is your birthday?
b, Whhat day is today?
         HỌC TỐT

When's your birthday?

What day is it today?

A. When is your birthday?

B. What day is today?

Hok tốt

Lô anh

trùi hay wa' idol bis bis :3

a nói đúng r

Good morning ! Welcome to the weather forecast. Let's take a look at the weather today and tomorrow. Today, it's cool and sunny in Ha Noi. What will the weather be tomorrow ?  Well, it will be hot and sunny. This is the weather forecast of today and tomorrow. The program is coming to an end. Please watch the show tomorrow. Have a nice day. Good bye !

Good morning ! We will come to weather forecasts today and tomorrow .Today in Hanoi it's cool and sunny. What will tomorrow be? Watch ! Tomorrow in Hanoi it's hot and sunny .This is the weather forecast today and tomorrow . The weather forecast program here comes to end . Please watch the show tomorrow. Have a nice day ! Goodbye .
 

mình nên k cho ai đây . Ai cũng hay 

?????

B. ngày mai là thứ sáu 

 hôm nay là thứ 5 ( theo thực tế )

hôm nay là thứ 5

zậy thì xin làm wen nhá

mk rất thk ns chuyện vs ng` nước ngoài

yeah^^ i think you can make friend with me

i very like america^^ it's a country which i like best^^

hihi, mình cũng biết nói bằng english khá thành thạo rồi, bạn dạy thêm cho mình nha^^ hi vọng tụi mình sẽ là bạn tốt của nhau

Hello Eva! I hope we can make you! 

Mình cũng khá khá giỏi Tiếng anh! Có gì bạn chỉ mình, mình chỉ bạn nhé! 

câu 1: Nice to meet you

câu 2: Good moring,Mai

câu 4: What do you like the job ?

câu 5:What subjects do you like? 

câu 3:what do you do on sunday night ?

nice to meet you good morning Mai what do you do on master japan What do you like the job? What subjects do you like to study?

nice to meet you

 good morning Mai

what do you do on master japan

What do you like the job?

What subjects do you like to study?

\(B=1.2.3+....+\left(n-1\right)n\left(n+1\right)\)

\(\Rightarrow4B=1.2.3.\left(4-0\right)+....+\left(n-1\right)n\left(n+1\right)\left[\left(n+2\right)-\left(n-2\right)\right]\)

\(\Rightarrow4B=1.2.3.4-0.1.2.3+.....+\left(n-1\right)n\left(n+1\right)\left(n-2\right)-\left(n-2\right)\left(n-1\right)n\left(n+1\right)\)

\(\Rightarrow4B=\left(n-1\right)n\left(n+1\right)\left(n+2\right)\)

\(\Rightarrow B=\frac{\left(n-1\right)n\left(n+1\right)\left(n+2\right)}{4}\)