expensive (adj): đắt

Refer:

1. The country is great.

=>It’s a great country.

2. The girls are beautiful.

=>They’re beautiful girls.

3. The Amazon River is longer than the Mekong River.

=>The Mekong River is shorter than the Amazon River.

4. Minh is shorter than Nam.

=> Nam is taller than Minh.

5. Miss White is younger than Mrs Green.

=> Mrs. Green is older than Miss White.

6. There is a lot of rain in Viet Nam.

=> Viet Nam has a lot of rain.

7. My room is smaller than your room.

=> Your room is bigger than my room.

8. No house on the street is older than this house.

=> This house is the oldest house on the street.

9. Hang is the fattest girl in my class.

=> No girl in my class is taller than Hang.

10. The Red River is 1,200 kilometers long. The Nile River is 6,437 kilometers long.

=> The Nile River is much longer than the Red River.

How many boards are there on the wall ?

Thay `x=2021` vào A: `A=2020.2021-2022 .2021^2 +2021^3=-2021`

1. going -> go

2. are you going -> you are going

3. ironing -> iron

program im_14424;
uses crt;
var A: array [1..99999] of integer;
i,n,dem : integer;
begin
clrscr;
dem:=0;
write('Nhap vao so phan tu: ',n);
readln(n);
for i:=1 to n do
begin
write('Nhap vao phan tu thu ',i,':');
readln(A[i]);
if (A[i] mod 2 = 0) then dem:=dem+1;
end;
write('So cac so chan la: ',dem);
readln(dem);
end.

a) Số cách xếp 5 quyển Toán nằm cạnh nhau là: `5! . 10!`

b)

Xếp 5 quyển sách Toán, ta có `5!` cách xếp, mỗi cách xếp đều cho tar 6 khe trống.

`->` Cần xếp 3 quyển Hóa vào 6 khe trống đó.

`->` Số cách xếp là: `5!.`\(A_6^3\)`=14400`.

a) `4\sqrt(2x-1)>8`

`<=>\sqrt(2x-1)>2`

`<=>2x-1>4`

`<=>x>5/2`

b) `2\sqrtx-1>3`

`<=>2\sqrtx>4`

`<=>\sqrtx>2`

`<=>x>4`

7. When did you last go to the cinema ?
8. I am used to getting up early in the morning.
9. I have learned to drive for 3 weeks.
10. Tired as she was, she couldn't sleep.
11. I have no intention of lending him any more money.
12. So as to improve Mery's communication skills, she took the course.

1. When did you have this motorbike ?
2. I have visited HCM city 3 times before.
3. While Jim was traveling in Paris, he met his old classmate there.
4. I have never flown in a plane before yesterday.
5. I have visited my grandparents for 2 weeks.
6. I had worked for my father for 3 years before I got a job with a French company.