x +7=14

x      =14-7

x =7

Đề bài: give the correct preposition in each blank

1)her house is in the country

2)there is a store next to the lake

3)my house is on a quiet street

4) there is a car in front of the house

5)there is a tree to the left of my house

6)Nam's house is between the tree and the garage

7)are you waiting for the bus?

8)I'm walking to school

9)She's listening to music now

10I'm on vacation in Hue

\(x+y=2\Rightarrow\left(x+y\right)^2=4\Rightarrow x^2+2xy+y^2=4\Rightarrow x^2+y^2=4-2xy\)

Lại có:\(x^2+y^2=10\Rightarrow4-2xy=10\Rightarrow2xy=-6\Rightarrow xy=-3\)

\(x^3+y^3=\left(x+y\right)\left(x^2-xy+y^2\right)=2\times\left(10-\left(-3\right)\right)\)

\(=2\times13=26\)

8⁷-2¹⁸=(2³)⁷-2¹⁸=2²¹-2¹⁸=2¹⁸.(2³-1)=2¹⁸.7 = 2¹⁷​.14 chia hết cho 14

*Điền vào chỗ trống với giới từ thích hợp

1. My mother usually washes fashion show on TV in her free time.

2. TV viewers can join in the contest and answer questions through telephone or by mail.

3. There are a plenty of music programs on TV.

4. I think this program is good for teenagers.

5. That flims is __________ at New Age Theater.

6. Nam bought two tickets for the moive tonight.

7. I like to watch programs for teenagers on orther coundtries.

8. Year ago we didn't have a TV set for our place.

*Mỗi câu sau có một lỗi sai hãy tìm và sửa lỗi đó

1. There are plenty music programs on TV nowadays. => is

2. Bands and snger usually perfrom their later songs on TV. => lastest

3. Some year ago people can watch only black and white programs on TV. => years

4. I am going to see a detective movie with classmates tonight. __________

5. Today we like hear the latest pop music. => hearing

6. Would you like going to the movie with me? => to go

Hãy cho dạng đúng của từ trong ngoặc để hoàn thành đoạn văn sau:

Sometimes I feel ( sleep) sleepy in the middle of the day and have a short nap, which I am very ( thank) thankful for. Unfortunately I sleep quite ( bad) badly at night because the people in the room next to me snore ( terrible) terribly. Anyway, I'm leaving this Friday. The drive back will ( probable) probably take me two or three days, as long as the traffic isn't too ( badly) bad I'll get in touch ( immediate) immediately when I get home and maybe we can arrange to meet up for a meal.

I. Choose the words or phrases that are not correct in Standark English.

1. We shouldn't run or walk careless around the pool edge.

A B C D

=> carelessly

2. It is difficult for us trying to stay away from water.

A B C D

=> to try

3. They plan improving water safety awareness for children.

A B C D

=> improve

4. Thanks for the diving vessel, he could explore the oceans of the world.

A B C D

=> to

5. This is some of the advices you should remember.

A B C D

=> are

Complete the sentences

1. Mr Kien's office / secon floor

=> Mr Kien's office is on second floor

2. There / too / cars / road / today

=> There are too cars on road today

3. She / have / lots / hobbies / when / she / a girl

=> She had a lots of bobbies when she was a girl

4. You / should / write down / new words / notebook

=> You should write down the new words in notebook

5. Why / not / you / go / movies / last night / ?

=> Why did't you go to the movies last night ?

6. I / always / try / new clothes / before / buy / them

=> I always try the new clothes before buy them

7. He / want / go / every where / world

=> He wants to go every where on the world

II- Choose the best correct answer to complete the following sentences.
1. Nam ______English on Monday and Friday.
A. not have B. isn’t have C. don’t have D. doesn’t have
2. We go to school at ______ in the morning.
A. a quarter to seven B. seven to a quarter
C. seven quarter D. a quarter seven to
3. Do children have math on Monday ? -……………….
A. Yes, they have B. No, they don’t
C. Yes, they don’t D. No, they not have
4. Mr. Nam gets up at 7.00 and eats ______
A. a big breakfast B. the big breakfast
C. big breakfast D. a breakfast big
5. Is her school ______the park?
A. in front of B. next C. in front to D. near to
6. Is this her______?
A. erasers B. books C. an eraser D. eraser
7. Tan likes ______ weather because he can go swimming.
A. hot B. cold C. windy D. foggy
8. ______straight across the road.
A. Don’t run B. Not run C. No run D. Can’t run
9. I hope the ______ can repair our car quickly.
A. mechanic B. reporter C. architect D. dentist
10. The Bakers ______ dinner at the moment.
A. is having B. are having C. eating D. is eating
11. ______ fruit does your father produce?
A. How much B. How many C. How long D. How often
12 When it becomes hot , people often feel ______
A. hungry B. thirsty C. happy D. worried
13. The sign says “ No smoking “ . You ______ smoke .
A. can B. are not C. must not D. must
14 . I’m playing table tennis . _______ you like table tennis ?
A. Have B .Is C. Are D. Do
15 . There is an English examination ______ Friday , 11th December .
A. at B. in C. to D. on
16. What time _____ back ?
A. is she coming B. comes she C. she does come D. does she comes
17. The students have got ______ news about their exams .
A. many B. some C. any D

Đặt 5 câu điều kiện bằng tiếng Anh với công thức:

If+S+V, S+will+V.

1 . If it is sunny , I will go out

2 . If you want to know my name , I will let uou know

3 . If he doesn't eat vegetable , he will be constipated

4 . If you is a hard person , you will be a good student

5 . If we go camping , we will have a good time