Bài 1.       Liệt kê các phần tử của tập hợp sau:

          a)    A = {x Î N | x < 6}                                                b)    B = {x Î N | 1 < x £ 5}

          c)    C = {x Î Z , |x| £ 3}                                               d)    D = {x Î Z | x² - 9 = 0} 

          e)    E = {x Î R | (x - 1)(x² + 6x + 5) = 0}                   f)     F = {x Î R | x² - x + 2 = 0}

          g)    G = {x Î N | (2x - 1)(x² - 5x + 6) = 0}                 h)    H = {x | x = 2k với k Î Z và -3 < k < 13}

          i)     I = {x Î Z | x² > 4 và |x| < 10}                              j)     J = {x | x = 3k với k Î Z và -1 < k < 5}

          k)    K = {x Î R | x² - 1 = 0 và x² - 4x + 3 = 0}           l)     L = {x Î Q | 2x - 1 = 0 hay x² - 4 = 0}

          m)  

Bài 2.       Xác định tập hợp bằng cách nêu tính chất đặc trưng:

          a)    A = {1, 3, 5, 7, 9}                                                   b)    B = {0, 2, 4}

          c)    C = {0, 3, 9, 27, 81}                                               d)    D = {-3, -2, -1, 0, 1, 2, 3, 4}

          e)    E ={4, 9, 16, 25, 36}                                              f)    

          g)                                                 h)   

          i)                                                    j)    

          k)   

chọn ra lỗi sai và sửa lại 

5. I've been studying French since I've started high school.

                 A                             B      C      D               

6.  I succeeded in to find a job, so my parents didn’t make me go to college.

                A              B                                             C                D

7. Get more exercise appears to be the best way to lose weight.

      A                             B        C                   D

8. I'd rather to stay home than go out tonight.

         A           B                 C       D

9. Why you call me so late last night ?

          A         B              C         D

10. Let's stop to watch so much TV so that we can read or go out instead.

            A            B                                                     C      D

IV. SPEAKING

III. GRAMMAR AND STRUCTURE

A. Choose the one word or phrase - a, b, c or d - that best completes the sentence.

1.  I'll see him when he ..................... here tomorrow..

     a. comes                           b. will come                      c. has come                        d. had come

2. We've given up ..................... to persuade them …………… .          

     a. trying/ changing           b. trying/ to change          c. to try/ changing             d. try/ to change

3. Maria is going to stop .................... dinner, so she may be late.

     a. eating                            b. to eat                            c. for eating                       d. eat

4. As soon as the light turned red, she ................... the car.

     a. stopped                         b. has stopped                  c. was stopping                          d. stops

5. The baby is so big! How much .................... now?

     a. is she weighing            b. she weighs                    c. does she weigh              d. did she weigh

6. Harry works all the time. He ..................... .

     a. never relaxes                 b. relaxes never                c. often relaxes                  d. relaxes sometimes

7. These glasses are so dirty. You need ................... them.

     a. wash                             b. washing                        c. to washed                      d. washed

8. The last time I ................... swimming was when we were in Spain. 

     a. had gone                       b. went                             c. has gone                         d. was going

9. Johnny ................... the paper when I …............. him.

     a. read/ interrupted                                                    b. read/ was interrupting

     c. has read/ interrupted                                             d. was reading/ interrupted

10. We were told ................. and fasten our seat belts.

     a. to sit down                    b. sitting down                c. sit down                        d. that sit down

11. I .................... at six o'clock, but ................... to be up by five.

     a. normally get up/ I have sometimes                        b. normally get up/ sometimes I have

     c. get normally up/ sometimes I have                        d. get normally up/  I sometimes have

12. The house was very quiet when I got home. Everybody ................... to bed.

     a. have gone                      b. went                            c. had gone                        d. goes

13. It was the most ................. experience of my life.

     a. frighten                          b. frightening                  c. frightened                      d. frightful

14. ............... I sympathize with your point of view. I cannot accept it.

     a. Although                       b. In spite of                    c. Because                         d. As

15. ................ a long time for the bus.

     a. We have to always wait                                        b. We always have to wait

     c. We have always to wait                                        d. We have to wait always

có thể giúp mình giải thích vì sao chon được không

B. WRITING:Fill in each blank with a suitable word:
1.I arrived__________ the airport quite early
.2.The meeting is _______ 9 o’clock _______ Monday
.3.His alarm clock goes __________ at 5.30 every day.
4.What time do you oftenget up __________ the morning?
5.The Pikes live _____ farming. They work hard ______ the field every day.Use the correct form of the words in bracket: