viết biểu thức đại số để biểu thị tích của x bình phương và hiệu của x và y

5.         A. asked         B. studied       C. designed     D. moved

II. Choose the best answer from A, B, C or D to complete the following sentences.

1. When was your school ____________? – 100 years ago.

A. found                                B. founded                         C. discovered                             D. born

2. When he arrived, everyone ____________.

A. has left                             B. left                                  C. had left                                   D. leave

3. In some vocational schools, the training quality is worse than ___________ used to be.

A. it                                        B. they                                C. them                                       D. that

4. Hurry up! They’ve only got _______ seats left.

A. a little                               B.  plenty of                        C.  a lot of                                   D. a few   

5.    He likes to take ___________ in sport, not only to watch it.

A. practice                            B. place                               C.  part                                        D. exercise

6.    I'd rather you ___________ anyone what I said.

A. don't tell                           B. won't tell                        C. didn't tell                                D. not to tell

7.    We were so late that we ______ had time to catch the train.

A. nearly                               B. hardly                             C. almost                                     D. simply

8.    There is always _______ traffic in the city centre at rush hour.

A. heavy                                B. full                                  C. strong                                     D. many

9.    Both she and her husband are _______ work.

A. out of                                B. for                                   C. on                                            D. in

10. Tom is having someone _______ the newspaper to her.

A. who brings                      B. to bring                          C. bringing                                  D. bring

11. They were just _______ us about Anna's new friend.

A. talking                              B. saying                             C. speaking                                 D. telling

12. He was unwilling to explain the reason _______ his absence.

A. for                                     B. why                                 C. of                                             D. that

13. Never ______ off until tomorrow what you can do today.

A. set                                      B. put                                 C. do                                            D. turn

14. The stolen jewels were ____________ a lot of money.

A. valued                               B. cost                                C. priced                                     D. worth

15. By the time you receive this letter, I will have left __________ Japan.

A. to                                      B. for                                   C. at                                             D. in

V. Complete the second sentence so that it has the same meaning as the first one.

1. Andrew went to the supermarket despite the heavy rain

→ Although .........................................................................................................................................

2. I love the countryside. That is why I want to go and live there.

→  I love the countryside, ............................................................................................................................ 

3. He was sorry he hadn’t said goodbye to her at the airport.   

→ He regretted................................................................................................................................. 

4. That is the best meal I have ever eaten.

→ I have never........................................................................................................................................... 

5. If it hadn’t been for this treatment, the patient would have died

→ Without ……………............................................................................................................................... 

III. Supply the correct forms of the words in brackets.

1. He is engrossed in doing (science) …………….. research.

2. Oil spills are a great (threaten) …………………………… to the undersea world.  

3. He wants (width) ……………… his knowledge of the subject.

4. The giant panda is a(n)  (danger)) ……………..species.

5. You may be surprised at the large (varied) ……………..of animals in national parks

II. Choose the best answer from A, B, C or D to complete the following sentences.

1. When was your school ____________? – 100 years ago.

A. found                                B. founded                         C. discovered                             D. born

2. When he arrived, everyone ____________.

A. has left                             B. left                                  C. had left                                   D. leave

3. In some vocational schools, the training quality is worse than ___________ used to be.

A. it                                        B. they                                C. them                                       D. that

4. Hurry up! They’ve only got _______ seats left.

A. a little                               B.  plenty of                        C.  a lot of                                   D. a few   

5.    He likes to take ___________ in sport, not only to watch it.

A. practice                            B. place                               C.  part                                        D. exercise

6.    I'd rather you ___________ anyone what I said.

A. don't tell                           B. won't tell                        C. didn't tell                                D. not to tell

7.    We were so late that we ______ had time to catch the train.

A. nearly                               B. hardly                             C. almost                                     D. simply

8.    There is always _______ traffic in the city centre at rush hour.

A. heavy                                B. full                                  C. strong                                     D. many

9.    Both she and her husband are _______ work.

A. out of                                B. for                                   C. on                                            D. in

10. Tom is having someone _______ the newspaper to her.

A. who brings                      B. to bring                          C. bringing                                  D. bring

11. They were just _______ us about Anna's new friend.

A. talking                              B. saying                             C. speaking                                 D. telling

12. He was unwilling to explain the reason _______ his absence.

A. for                                     B. why                                 C. of                                             D. that

13. Never ______ off until tomorrow what you can do today.

A. set                                      B. put                                 C. do                                            D. turn

14. The stolen jewels were ____________ a lot of money.

A. valued                               B. cost                                C. priced                                     D. worth

15. By the time you receive this letter, I will have left __________ Japan.

A. to                                      B. for                                   C. at                                             D. in

VII. Rewrite the sentence, using given words

1. One/ disadvantages /  living in the countryside / lack / public transport.

      ..............................................................................................

2. I / always / keep / window / open / order / let / fresh air / in.

      ..............................................................................................

3. How long / you / leam English? ..............................................................................................

4. Homework / must / be / hand / before / end / the week.

      ..............................................................................................

5. These exercises / too difficult / students / do / without / mistakes.   ..............................................................................................

6. You should not watch TV too late.

    You’d ......................................                              

7. We didn’t enjoy the trip because of the heavy rain.

   The heavy rain stopped.....................................      

8. A train leaves at eight o’clock every morning.

    There is ..................................................     

VII. Rewrite the sentence, using given words

1. One/ disadvantages /  living in the countryside / lack / public transport.

      ..............................................................................................

2. I / always / keep / window / open / order / let / fresh air / in.

      ..............................................................................................

3. How long / you / leam English? ..............................................................................................

4. Homework / must / be / hand / before / end / the week.

      ..............................................................................................

5. These exercises / too difficult / students / do / without / mistakes.   ..............................................................................................