1. A

2.C

3.D

4.C

5.A

6. C

7. C

8.B

9. D

10.D

1.The children like to see this cartoon because it is funny

2.Although Mrs. Lan has a car, she doesn't drive  to work

6.A.pro'cession         B.poli'tician           C.com'panion        D.his'torian

7.A.partici'pation        B.tra'dition           C.a'ttention             D.pro'duction

8.A.o'blige                  B.be'longing         C.mi'nority              D.'virtual

9.A.con'venient          B.anni'versary       C.gene'ration         D.speci'ality

10. B

11.D

12.D

13.B

14.C

15.B

16.D

year => years

1.have left

2.was reading

3.has finished

4.wrote

5.left

6.are you looking

7.was walking

8.was

9.had got

10.Did you see

11.walked

12.had left

13.had forgotten

14.didn't work

15. had happened

19. C

20.B

21.D

22.A

23.C

24.A

3×(2+x)-15=31 <=> 6+3x-15=31<=> 3x=40 <=> x=\(\dfrac{40}{3}\)

1. In some countries, tipping is a usual thing

2. Tipping is not a custom in Viet Nam, so you don't have to tip if you don't want to

3. poverty, Lang Lieu couldn't buy any special food

11. The boy of whom you made fun of is my cousin

12.this matter, which you should pay attention to, is of great importance

13. The woman to whom you gave place on the bus lives next door to me

14. This snake, which you are afraid of, is venomless

15. The examination in which I was successful  laste two days

16. These children, of  whom she is taking care, are orphans

17. The two young men with whom you are acqunted are not good persons

18. This is the result of our work which i'm pleased with

19. There is a ' No Parking' sign of which I do not take notice

20. Mr. Brown is the man to whom I'm responsible for my work