I, Tìm lỗi sai và sửa :

1. In the 1920s cinema became an important art form and one of the ten largest industry => industries in the US

2. In some cases , advertisement make people to buy => buy things that they do not really want.

3. Geogre told Mary that he has seen => had seen this film three times.

4. It was so => such nice weather that we would like to go to the beach

5. Though it is one of the rarest metals, gold was one of the first to be discover=> discovered .

6. Although polar bears hunt other animals, they seldom => omitted rarely kill people.

7. Hanoi has been the economic, culture => cutural and political center of the Vietnamese.

8. The earth is the only planet with a large number => amount of oxygen in its atmosphere.

9. Nearly all chemical agents are harmful to living tissue if enough of them is => are taken.

10. By measuring the color of the star, astronomers can tell how hot is it => it is.

I, Tìm lỗi sai và sửa :

1. In the 1920s cinema became an important art form and one of the ten largest industry => industries in the US

2. In some cases , advertisement make people to buy => buy things that they do not really want.

3. Geogre told Mary that he has=> had seen this film three times.

4. It was so => such nice weather that we would like to go to the beach

5. Though it is one of the rarest metals, gold was one of the first to be discover=> discovered .

6. Although polar bears hunt other animals, they seldom => omitted rarely kill people.

7. Hanoi has been the economic, culture => cultural and political center of the Vietnamese.

8. The earth is the only planet with a large number => amount of oxygen in its atmosphere.

9. Nearly all chemical agents are harmful to living tissue if enough of them is => are taken.

10. By measuring the color of the star, astronomers can tell how hot is it => it is.

GIVE THE CORRECT FORM OF THE WORDS

1. We shouldn’t eat too much......fatty....... food and sugar. ( fat)

2. Linda is the most....beautiful.......... of the two girls ( beaty)

3. How many times a day do you brush your.....teeth..........? ( tooth)

4. Did they make a ..decision.... not to go to Italy for their vacation? ( decide)

5. My stomachache...disappeared......after I took the tablet ( appear)

6. You should wash the fruits.....carefully .....before eating them ( care)

7. Having a.....running..... nose is a symptom of a cold ( run)

8. Liz’s....visit....... to cham Temple was wonderful ( visit)

9. Finally, he decided.....to seat..... down ( seat)

10. Hoa is the......helpful......student in the class ( help)

FIND AND CORRECT MISTAKES IN EACH SENTENCES

Sorry, I didn’t

I. Rewrite the sentences without changing the meaning.

1. Martin may not be very well but he still manages to enjoy life.

⇒⇒ Martin's .......poor health can't prevent him from enjoying life.........

2. Thanks to his aunt's legacy of 10.000 $ he was able to buy the house he wanted.

⇒⇒ Had his ........not received the legacy of 10000 from his aunt...........

3. The workers only called off the strike after a new pay ofter.

⇒⇒ Only after ....... a new pay is offered did the workers called off the strike...................

4. I prefer going out for a meal to staying at home.

⇒⇒ I'd rather ......go out for a meal than stay at home.........

5. Mary was the only student absent from class.

⇒⇒ Apart........from Mary, evertbody attended the class.........

6. It's difficult for older people to learn a language.

⇒⇒ Older people have .......difficulty in learning a language...........

7. Jane hasn't made much progress at school.

⇒⇒ Jane has only.....made a little progress at school .........

8. He does almost no work.

⇒⇒ He hardly .......does work.........

9. I had expected the weather to be worse

⇒⇒ The weather was not.......as bad as I had expected.....

10. It's the cheapest watch but it's the nicest.

⇒⇒ Not only......is it the cheapest but it is also the nicest. ........

Giả sử p khác 3.Suy ra p không chia hết cho 3 do p là số nguyên tố. 
Suy ra p chia 3 dư 1 hoặc 2. 
Nếu p chia 3 dư 1=> p=3k+1=>p^2+44=(3k+1)^2+44=9k^2+6k+45=3(... chia hết cho 3,do đó ko là số nguyên tố 
Nếu p chia 3 dư 2, cũng y vậy p^2+44 chia hết cho 3,do đó cũng ko là số nguyên tố 

Vậy chỉ có p=3 thỏa thô

Đổi các câu sau ra thể phủ định và nghi vấn

1. Her name is Linh

(-) Her name isn't Linh.

(?) Is her name Linh?

Yes, it is./ No, it isn't.

2. They're nurses

(-) They are not nurses.

(?) Are they nurses?

Yes, they are./ No, they aren't.

3. I'm an engineer

(-) I am not an engineer.

(?) Are you an engineer?

Yes, I am./ No, I am not.

4. Those are his pens

(-) Those are not his pens.

(?) Are those his pens?

Yes, they are./No, they aren't.

5. My father is a doctor

(-) My father is not a doctor.

(?) Is your father a doctor?

Yes, he is./ No, he isn't.

I ) Use the correct form of the words in brackets to complete sentences :

1. The___outbreak___ of the bird is worrying. ( break )

2. Congratulations ! You have made __remarkable_ progress in your study so far. ( remark )

3. No ______further_______ details about the celebration have been given. ( far )

4. He has spent many ___sleepless______ nights examining the question. ( sleep )

5. He is in the government , he is a well - known ____speaker_______ (speak )

6. The result was however ___unsatisfactory___. What a shame! ( satify )

7. You must make a quick __decision___ about who wins the contest ( decide )

8. People who eat a lot often because __overweight___ (weigh )

9. It was a long, slow film. I nearly died of __boredom _____ ( bore )

10. Graham hates queuing. He is very __impatient_ ( patient )

II ) Fill in the blanks with a suitable prepositions

1. We wish we had a father __like____ yours.

2. When I saw Mary I congratulated her _on__ her success in the exam.

3. What do people jog __for____ ?

4. I' ve just rewarded her _____with_____ a book ___for_______ her good study.

5. They ' ve just left Hanoi_____for____ Dalat ____for______ their holiday.

6. ____Besides____ paper, many other products can be recycled.

7. We should provide any child __with_____ a chance to go to school.

8. He doesn't take much exercise apart ___from___ walking.

Đặt câu hỏi cho phần in nghiêng của câu (câu cho trước là câu trả lời ).Wh question

1. something has happened.oh?

=> What has happened?

2.I've invited someone to tea.

=> Who have been invented to tea?

3.the doctor has some children.

=> How many children does the doctor have?

4.someone is having a party tonight.

=> Who is having a party tonight?

5.rachel is planning something.

=> What is Rachel planning?

6.A lot of money was stolen last night.

=> When was a lot of money stolen ?

7. you can keep those photos.

=> What can I keep ?

8. the meeting will last long.

=> How long will the meeting last?

9.I'm looking for someone.

=> Who are you looking for?

10. we are going somewhere on weekends

=> When are you going somewhere?