Exercise 1: Give the correct form of the vebs in brackets

1. My house ( paint)………………... every two years

2. This motobike ( buy)…………………. By friend of mine in China

3. If you have lost your money , you (have)………………… to buy another one

4. If I ( can)………………… speak Japaneses, I ( go)………………. To Japan next year

5. Were he ten years younger, he ( take)…………… part in the voyage around the world

6. He (do)…………….. his homwork from seven to nine last night

7. I phoned my friend last night. He ( meet)…….. at the airport tonight

8. If I see him, I (give)………… him a gigt

8. If I had typewriter, I (type)……………. It myself

9. Most of the earth's surface ( cover)………………. By water

10. A hospital should ( build)…………………. In this erea

11. Marry (look)………. … very diffirent now. When you see her, you (recognise)…….. her

12 If the earth suddenly ( stop)………… spinning we all (fly)……….. off it

13. If you ( spoke)…………… in a non- smoking compartment the other passenger ( object)……………….

14. Tom is lazy. If he weren't lazy, he ( not get)…………… bad marks

15. If Anna ( not lend)…………… her the money, Parm wouldn't have bought the stereo systerm

16. I don't have my car today. It's in the garage. It (repair)…………… right now

17. the scholl for special children ( build)……………… here for eight years

18. Don't be afraid. If you ( touch)…………….. the dog, It (bite)…………

19. I ( try)……………. To ring you yesterday but you (leave)………..

Exercise 2: Give the correct form of the vebs in brackets

1. The best time to visit Cuc Phuong National park is form October to April when the (rain)…………… season is over

2. There is a large (vary)……………. Of animals that live in National National Park

3. The National Park is in the ( south)…………… part of the country

4. To my (surprise)…………… , she agreed to work overtime during the week without any complaint

5. She was completely ( recognize)……………….. because she was wearing a mask and sun glasses

6. The regulations of the competition will announced ( office)………… on TV next week

7. We can't stop the ( appear)…………. Of plants and animals

8. It is ( possibelity)………….. to ride a motobikr in Viet Nam without a helmet

9. My son's study is (worry)………. He often gets bad marks at school

10. Man (constancy)………………. Doing harm to the enviroment

11. A lot of money has been spent on ( reconstruct)……………. Of the animals' nature enviroment

12. Some people think that zoos are places where animals are ( prison)………….. againts their will

13. The new law to 9 conservation)…………. Wildlife in Viet Nam is going to be passed

14. What's the (deep)…………. Of the river ?

15. Sharks are one of species that mive (depen)…………….. of water currents

16. There are many ( mysterious)……………. Lying beneath the sea that the ( science)……… need to overcome

17. People should choose the seafood ( responsible)………… to protect the ( danger)………. Sea animal

18. We shouldn't use herbicides, pesticides and fertilizers that ( harmfull)…………… the enviroment

19. We have to place rubbish and plastic bags (proper)……………

Exercise 3:   Find the one mistake (A, B, C or D) in these sentences and then correct them:

1/ Does that book (A) tell (B) a story (C) of his life from (D) A to Z?

2/ Discovering (A) a therapy (B) for cancer is (C) one of (D) biggest challenges facing medical researchers.

3/ We think it's not (A) one good idea to spend many hours at (B) the wheel (= driving (C) a vehicle) without (D) a break.

4/ Do you agree that (A) an apple (B) a day keeps (C) a doctor (D) away?

5/ As (A) often as not when he (B) makes (C) an effort to visit his friend, he wonders (D) why he’s even worried.

6/ Satellite technology offers (A) the chance, as (B) ever before, (C) for continuous television coverage (D) of major international events.

7/ Every so (A) often he treats (B) him to (C) a meal in (D) a luxurious restaurant.

8/ (A) Sometime I take food (B) with me and (C) sometimes I buy food (D) when I’m there.

9/ (A) Seldom they receive (B) any apology when (C) mistakes (D) are made.

10/ (A) Hard had (B) a moment passed (C) before (D) the door creaked open.

Exercise 4:   Supply the correct form of the word in brackets:

1/ We are concerned with the physical and (psychology) _______ well-being of our employees.

2/ I'm trying to be more (adventure) _______ with my cooking.

3/ My most (embarrass) _______ moment was trying to introduce a woman whose name I couldn't remember.

4/ The prime minister denied that the new visa requirements were part of a (hide) _______ agenda to reduce immigration.

5/ We spent a (luxury) _______ weekend at a country hotel.

6/ (Tragic) _______, the side-effects of the drug were not discovered until many people had been seriously damaged by it.

7/ There is possibly less chance of another World War while the last one is within (live) _______ memory.

8/ Please give (generous) _______ to Children in Need.

9/ Paul's always very (smart) _______ dressed.

10/ The (discover) _______ of a body in the undergrowth started a murder enquiry.

Exercise 5:   Fill in each gap with the most suitable preposition:

1/ They work _______ the night and sleep _______ day.

2/ They live _______ that old farmhouse _______ the hill.

3/ I've been _______ this job _______ thirty years, and I've picked _______ a good deal _______ expertise _______ the way.

4/ The improvement has been _______ the board, _______ all divisions either increasing profits _______ reducing losses.

5/ Her name comes _______ mine _______ the list.

6/ _______ AD 79 the city _______ Pompei was buried _______ a layer _______ ash seven metres deep.

7/ He's been _______ the department (= working _______ it) _______ 1982.

8/ She's _______ _______ the office _______ a few days next week.

9/ I felt frightened _______ the anger _______ his voice.

10/ _______ the top _______ the tower you could see _______ miles _______ the city.

Exercise 1:   Choose the best answer A, B, C or D for each sentence:

1/ A _______ is a famous cinema actor or actress.

A. filmgoer B. film director C. film maker D. film star

2/ A _______ is a book used in school containing text and questions and sometimes having spaces for a student to write answers in.

A. notebook B. workbook C. exercise book D. reference book

3/ The _______ of the bay is approximately 200 miles.

A. long B. length C. lengthy D. lengthen

4/ She's an extremely competent and _______ worker.

A. industry B. industrial C. industrious D. industrialize

5/ The _______ between the original book and this new film is very faint.

A. relative B. relation C. relationship D. related

6/ Our prices are _______ with those in other shops.

A. comparison B. comparative C. comparable D. comparably

7/ They didn't like my _______ that we should all share the cost.

A. suggest B. suggestion C. suggestive D. suggestible

8/ "Am I _______ you?" she asked anxiously.

A. bore B. bored C. boring D. boredom

9/ The restaurant turned out to be _______ cheap.

A. surprise B. surprised C. surprising D. surprisingly

10/ There's no _______ what she'll do if she finds out about this.

A. know-how B. knowledge C. knowable D. knowing

Exercise 2:   Select the best option to complete the sentences:

1/ Americans drive _______ third of _______ 400 million cars on _______ planet.

A. one-the-the B. a-X-the C. one-X-a D. a-the-a

2/ _______ you miss this train you can _______ catch the next one.

A. Because-often B. If-always

C. When-usually D. Unless-sometimes

3/ I thought I _______ him come in _______ we were having dinner.

A. hear-when B. look-while C. looked-when D. heard-while

4/ _______ I know likes the smell of bacon - _______ Mike does and he's a vegetarian.

A. Anyone-but B. No one-while

C. Everyone-even D. Someone-and

5/ _______ opportunity as good as this arises _______ in a lifetime.

A. A-before B. One-twice C. The-during D. An-once

6/ _______, I'd like to thank everyone _______ coming this evening.

A. Always-to B. Finally-for C. Often-by D. Lastly-with

7/ The dinosaurs died _______ 65 million years _______.

A. out-ago B. away-before C. down-after D. off-next

8/ As I have _______ mentioned, I doubt _______ we will able to raise all the money we need.

A. just-when B. finally-what C. recently-if D. already-that

9/ “_______ Emma's only worry was _______ her lipstick had smudged.” “Emma! What is she _______?”

A. Really-if-doing B. As usual-that-looking

C. Usually-what-such as D. Of course-whether-like

10/ _______, it's my turn to be served - I was _______.

A. Excuse me-next B. Sorry-after

C. Pardon me-following D. Hello-coming

6) Cho các phản ứng sau

- Hoàn thành các phương trình hóa học ?

- Vai trò H₂SO₄ đặc là gì? (tính hoxi hóa, tính háo nước, tính axit mạnh)

a) Cu + H₂SO₄ đặc

b) Fe + H₂SO₄ đặc nguội

c) H₂SO₄ đặc + S

d) H₂SO₄ đặc + KBr

e) H₂SO₄ đặc nguội + Al

g) H₂SO₄ đặc + FeO

h) H₂SO₄ đặc + Fe(OH)₂

i) H₂SO₄ đặc , dư + Fe (t⁰)

m) C+ H₂SO₄ đặc

n) H₂SO₄ đặc + NaOH

o) H₂SO₄ đặc + MgO

k) H₂SO₄ đặc + Fe₂O₃

                                               ------ 

Thế nào là sự hóa than bởi H2SO4 đặc?

5) Cho các phản ứng sau: Hãy hoàn thành phương trình phản ứng?

a) S + O₂

b) FeS₂ + O₂ (t⁰)

c) SO₂ + O_{2 (}t⁰, xt)

d) nSO₃ + H₂SO₄ đặc

e) H₂SO₄ đặc .nSO₃  + H₂O

g) H₂SO₄ + BaCl₂

h) H₂SO₄ + Ba(OH)₂

i) H₂SO₄ + Ba(NO₃)₂

k) Na₂SO₄ + BaCl₂

m) Na₂SO₄ + Ba(NO₃)₂

o) Na₂SO₄ + Ba(OH)₂

1) H₂SO₄ có ứng dụng nào trong thực tế

2) Trong công nghiệp H₂SO₄ được sản xuất theo các công đoạn nào?

3) Muối sunfat gồm những loại nào?

4) Thuốc thử thường để nhận biết ion sunfat là hóa chất nào?