Cho A= (\(\frac{2\sqrt{x}}{\sqrt{x+3}}+\frac{\sqrt{x}}{\sqrt{x}-3}-\frac{3x+3}{x-9}\)) : (\(\frac{2\sqrt{x-2}}{\sqrt{x-3}}-1\))

a. Rút gọn A b. Tìm x để A < \(-\frac{1}{2}\) c. Tìm x để A đạt GTNN

Cho B= (\(\frac{\sqrt{x+1}}{\sqrt{x-1}}-\frac{\sqrt{x-1}}{\sqrt{x+1}}-\frac{8\sqrt{x}}{x-1}\)) : (\(\frac{\sqrt{x-x-3}}{x-1}-\frac{1}{\sqrt{x-1}}\))

a. Rút gọn B b. Tính A với x=6-2\(\sqrt{5}\) c. CMR: A <_1

Cho P= \(\frac{x\sqrt{x}+26\sqrt{x}-19}{x+2\sqrt{x}-3}-\frac{2\sqrt{x}}{\sqrt{x-1}}+\frac{\sqrt{x}-3}{\sqrt{x}+3}\)

a. Rút gọn P b. Tính giá trị của P khi x= 7-4\(\sqrt{3}\) c. Với giá trị nào của x thì P đạt giá trị nhỏ nhất và tính giá trị nhỏ nhất đó

1. The earth (be)_____ round. It (not, be)_________ spare

2. The day before yesterday, I (go)______ to a football match. It (be)______ very exciting. All the players (play)________ skilfully

3. Look! The boy (draw)__________ a picture on the wall. Stop him

4. Tom has made some coffee. He (drink)_____________ it

5. I (spend)_________ 2 hours (write)________ this report

6. (Look)_________ at me, he smiled happily

7. Where_________ you (start)____________(learn)_________English?

- I (begin)_________(learn)________ English 3 years ago

8. We haven't got any salt - Haven't ww? I (get)__________ some from the shop then

9. I feel terrible. I (be)________ sick

10. The ceiling in this room doesn't look very safe, does it? - No, it looks as if it (fall)_____ down

11. You ought (do)__________ more homework

12. You must (study)___________ hard

13. Work hard or you (fail)__________ the exam

14. China (have)_________ a population of over one billion

15. Nam always (get)______ up early

16. Never let children (play)_______ with matches

17. There's nothing in the basket. She (empty)_________ it

18. We oughtn't (work)_________ lazily

19. The garbage is full - OK. I (empty)_______ it

20. Don't talk. I (study)_______

1. Nga invited Hoa to the movies,___________?

2. You think your English is good enough,____________?

3. Hoa arranged the time,____________?

4. Bao can play chess,______________?

5. They'll go to the popo concert,____________?

6. A.G.Bell was born in Edinburgh,____________?

7. You are fond of action movies,______________?

1. She isn't smart. She isn't beautiful

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2. I don't smoke. I don't drink

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3. Nguyen didn't come. Khoa didn't come

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4. Lan isn't reserved. Mai isn't reserved

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5. I'm not a student. I'm not a teacher

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6. He didn't leave the message. I didn't, either

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LÀM GIÚP MÌNH VỚI

1 The dog hurt ______ when it jumped over the fence

2 You shouldn’t really blame _______ for that mistake

3 Take care of ______ children

4 I must learn to control _____

5 Helen and you enjoyed _______ very much at the party

6 Both boys taught ______ to swim

7 Don’t work too hard. Enjoy _____

Câu hỏi với too/enough

1. She is so short that she can't reach the bookshelf

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2. I can't drive a car because I am only 16 years old

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3. That horse will never win the race because it doesn't run fast

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4. This grammar is very diffcult. A child can't understand it

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5. The moon is very bright. I can read a book by it

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6. The music is very soft. We can't hear it clearly

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7. This mountain is very high, we can't climb it

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8. She is 6 years old. She can start going to school

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9. The weather is quite bad. They are not able to have a picnic in the countryside

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10. The food is so hot. They can't eat it right now

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11. The test is very diffcult so it takes students 2 hours to do it

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12. Because the film is so terrible. He don't want to see it

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13. She has many friends. She feels very happy

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Cấu trúc enough:

1. Ann can't carry these suitcases because they're too heavy.

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2. The question is diffcult. We can't answer it

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3. He isn't allowwed to ride a motorbike because he is too young

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4. They don't have much money. They can't buy these books

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5. The water is so dirty that he can't bathe his eyes

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6. Are you sure that the tea isn't hot? Can I drink it?

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