\(x\times\dfrac{20}{11}=\dfrac{1}{1}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{9}+\dfrac{1}{9}-\dfrac{1}{11}\\ x\times\dfrac{20}{11}=\dfrac{10}{11}\\ \Rightarrow x=\dfrac{1}{2}\)

Ta có :

=> X x 20/11 = ( 1 - 1/3 ) + ( 1/3 - 1/5 ) + ( 1/5 - 1/7 ) + ( 1/7 - 1/9 ) + ( 1/9 + 1/ 11 )

=> X x 2/11 = 1 - 1/11 = X x 1/11 = 11/11 - 1/11

=> X x 20/11 = 10/11

=> X = 10/11 : 20/11

=> X = 1/2

\(Xx\dfrac{20}{11}=\dfrac{2}{1}-\dfrac{2}{3}+\dfrac{2}{3}-\dfrac{2}{5}+\dfrac{2}{5}-\dfrac{2}{7}+\dfrac{2}{7}-\dfrac{2}{9}+\dfrac{2}{9}-\dfrac{2}{11}\)

\(Xx\dfrac{20}{11}=\dfrac{2}{1}-\dfrac{2}{11}\)

\(Xx\dfrac{20}{11}=\dfrac{20}{11}\)

\(X=\dfrac{20}{11}:\dfrac{20}{11}\)

\(X=1\)

vậy X = 1

a) | x+5|+3=7

|x+5|=4

=> x+5=4

Hoặc x+5=-4

=>x thuộc { -1 ; -9}

Vậy x thuộc { -1 ; -9}

b) 25 - | x| =10

=> |x|=15

=> x thuộc { 15 ; -15}

Vậy c thuộc { 15 ; -15}

a) \(\left|x+5\right|+3=7\)

\(\left|x+5\right|=7-3\)

\(\left|x+5\right|=4\)

TH1: x + 5 = 4

x = 4 - 5

x = -1

TH2: x + 5 = -4

x = -4 - 5

x = -9

Vậy x ∈ { -1; -9 }

1...................How can I help you ?

a. Do you need any help ?

b, How may I help you

c. Let me help you

d. could you help me

2. Let me help you ?-.....................

a, no problem

b. no. thank you

c. thank you, I don't need

d. sure

3. I need a favor.-...................

a. no problem

b. what do you need

c. Yes. I know

d. No thank you

4. .............?- Certainly

a. do you help me ?

b. you don't mind helping me

c. can you help me

d. that's very kind of you

5. .................?- Yes. That's very kind of you

a. may I help you

b. Did you need any help

6. The red bicycle is not as expensive ...............the blue one

a. so

b. like

c. more

d. as

7. They're offering a 10%...........on all sofas this month

a. reward

b. discount

c. reduce

d. cut

8. Mr Brown is the same age............my father

a, as

b. like

c. from

d. with

9. Could you do me a favor, please ?

a, I can't help you

b, Sure. What can I do for you

c. Yes. Thank you

d. Luckily, I am really busy

10. Excuse me! I'm doing my homework,................turn down your radio a bit ?

a, would you like

b. why don't you

c. could you

d. would you mind

11. would you like to see a film?

a, yes I like

b. yes I do

c. Yes I will

d. Great!Let's go

1.d

2.c

3.b

4.c

5.a

6.d

7.b

8.a

9.b

10.c

11.d

*Different:

Holiday:It nearly the same as vacation time you have day-off,you have a holiday to ralax...

Journey:You take a journey for maybe works,maybe sth nearly likes that,...or for discovering.

It also likes adventure.

*Same:

They all are trips.

Choose the right word to fill in the blanks

1. .....Can..........you help me ? ( Can, Should, May )

2. .....No......proplem, sir ! ( Any, Without, No )

3. .........May.......I help you, Madam ? ( Should, May, Need )

4. Yes. That's very.........knid.......of you. ( help, kind, fine )

5. Could you.....do..........me a favor ? ( do, make, take )

6. I'm......sorry..........I'm really busy ( pity, not good, sorry )

7. Do you......need..........any help ? ( have, need, think )

8. No,.....thank you.......I'm fine. ( sorry, thank you, OK )

9. .........Let.........me help you. ( Give, Let, Ask )

10. Let him.....does.........what he wants ( do/ does )

10. I need a favor.

( That's very kind of you / How can I help you ? )

11. My mother is busy .................( to cook, cooking )

12. Mrs Xuan looks very...............( happy/ happily )

13. After filling the form, please..........it back to me ( bring / take )

Choose the right word to fill in the blanks

1. ...............you help me ? ( Can, Should, May )

2. ...........proplem, sir ! ( Any, Without, No )

3. ................I help you, Madam ? ( Should, May, Need )

4. Yes. That's very................of you. ( help, kind, fine )

5. Could you...............me a favor ? ( do, make, take )

6. I'm................I'm really busy ( pity, not good, sorry )

7. Do you................any help ? ( have, need, think )

8. No,............I'm fine. ( sorry, thank you, OK )

9. ..................me help you. ( Give, Let, Ask )

10. Let him..............what he wants ( do/ does )

10. I need a favor.

( That's very kind of you / How can I help you ? )

11. My mother is busy .................( to cook, cooking )

12. Mrs Xuan looks very...............( happy/ happily )

13. After filling the form, please..........it back to me ( bring / take )

1. Can

2. No

3. May

4. kind

5. do

6. sorry

7. need

8. thank you

9. Let

10. do

11. How can I help you?

12. to cook

13. happy

14. take

Hãy sắp xếp những câu sau thành hai bài hội thoại hợp lí:

P1

(1)Could you do me a favor, please?

(2)Sure. What can i do for you?

(3)Yes. Could you show me to the nearest bus-stop?

(4)Certainly. Go ahead. Take the second turning on the left. It's on the way.

(5)Thank you. i'm sure i'll find it.

P2

(1)Do you need my help?

(2)Can you help me remove this motorbike? It's on the way.

(3)No problem. i'll help you.

(4)Thank you very much. That's very kind of you.

VII. Write a thank-you letter using the words given. (10 pts)
Dear Nhung,
1. Thank you/ much/ the flowers/ you/ send/ while/ I/ be/ hospital.
_______Thank you very much for the flowers you sent me while I was in the hospital____________________________________
2. They/beautiful/ and/ they/ really/ help/ cheer/ me/ up.
_____They were very beautiful and they really helped to cheer me up______________________________________
3. I/ come out/ hospital/ last Thursday morning.
____I came out of the hospital last Thursday morning_______________________________________
4. You/ come over/ place/ weekend/ because/ I/ very/ bored/ now?
___Will you come over to my place on the weekend because I am very bored now?________________________________________
5. I/ look forward/see/soon.
_____I am looking forward to seeing you soon______________________________________
Love, (Thao)
VIII. Read the passages the fill in each blank with a suitable word. (10 pts)
How Nam has improved his English.
In the first year of lower secondary (1)___school_____, I had some difficulties
in learning English. My English pronunciation (2)____was___ really bad and my
English grammar was worse. I did not (3)___know____ how to improve them. I didn’t
want my father (4)__and_____ mother to know about this. One afternoon after the
lesson, my teacher (5)____in___ English told me to wait 6)___for____ her outside the
classroom. She took (7)____me___ to the school library and showed me tapes of
pronunciation drills kept in a glass bookcase. She also told me how to use an
English- English dictionary to (8)____improve___ my English grammar. “Now I think you
know what you should do” she said. I made much progress and only one year
later, I won the first (9)____prize___ in the English Speaking Contest (10)____organized___ for

1. The post office is not far_from___ my house.
2. Mrs. Lien said you could reach her__at__ 8 603 312.
3. Snow is falling all__over__ the country.
4. Will you pick me__up__ after the party?
5. We all agreed__with__ their request for a full investigation.

VII 1. Thank you/ much/ the flowers/ you/ send/ while/ I/ be/ hospital.

 Thank you very much for the flowers you sent me while I was in the hospital.

2. They/beautiful/ and/ they/ really/ help/ cheer / me/ up.

 They were very beautiful and they really helped to cheer me up.

3. I/ come out/ hospital/ last Thursday morning.

 I came out of the hospital last Thursday morning.

4. You/ come over/ place/ weekend/ because/ I/ very/ bored/ now?

 Will you come over to my place on the weekend because I am very bored now?

5. I/ look forward/see/soon.

 I am looking forward to seeing you soon.

VIII

1. school

2. was

3. know

4. and

5. of

6. for

7. me

8. improve

9. prize

10. held