- Hic, cái khác được không

- Uầy thì bạn bấm đại vào một môn nào đó rồi vào phần Lựa chon môn học là dc thôi

1/ It is raining heavily now. You should stay at home and read books.

2/ What are you doing at the moment?

- I am writing an essay.

3/ Where will Lan and Ba going tomorrow? They will visit the Museum.

4/ You will have Geography next Friday.

5/ What about playing a game of chess?

6/ It takes her 10 minutes to make this toy.

7/ She will be ten on her next birthday.

8/ I will meet you soon.

9/ Why don't we hold a party?

Hì hì, có vài câu mình không chắc sai bạn có thể nói mình sẽ sửa.

1/ Do you go to school on foot or by bike?

2/ My house is on Le Loi Street, her house is at 9 Le Lai Street.

3/ We are living with our parents live Quang Ngai town.

4/ I'm in class 7A.

5/ Dictionaries are on the shelves to the left of the room.

6/ She is interested in literature, but we are fond of Math.

7/ My birthday is on May first.

8/ Is Lan's birthday in March.

9/ Yen has Math and Music on Monday.

10/ Tom is good at physics.

11/ What do you often do at recess?

12/ Tom lives in the city, but Mary lives Ø on a farm.

- Bạn nói là nơi ở hay là người hàng xóm :)

Áp dụng công thức tính số góc tạo thành nhờ n tia chung gốc thì ta có:

- n . ( n - 1 ) : 2 = số góc tạo thành

Áp dụng công thức theo hướng ngược lại, ta có:

- n . ( n - 1 ) : 2 = 21

=> n . ( n - 1 ) = 21 . 2

=> n . ( n - 1 ) = 42

Mà 6 . 7 = 42

=> n = 6

Vậy giá trị của n = 6.

- Do you get up at 6:00.

- Is a cat intelligent?

- He isn't going to go swiming.