15. -> This picture's price is diferent from that picture's price.

16. -> Mr. Brown speaks the same languages as Mr. Kent does.

17. -> Mr.Phong teaches the same subject as Mrs.Ha.

18. -> I like pop music, my brother likes pop music, too.

19. -> This painting is the same colour as this painting.

20. -> The new sculpture isn't as tall as the old sculpture.

21. -> The nationality of Van Gogh is different from Picasso.

22. -> Hoa doesn't sing as beautifully as her sister.

23. -> Iron is harder than Stone

24. -> He plays the guitar better than I do

25. -> Ho Chi Minh City is the largest city in Vietnam.

26. -> They spoke so quickly that we couldn't understand them.

27. -> He speaks so slowly that his students get bored.

28. -> This question is found to be difficult to understand.

29. -> It took them 3 years to build that bridge.

30. -> The sea was too rough for the children to go swimming.

31. -> It takes me 2 hour to fishing my  homework.

32. -> It took us 3 hours to open the door.

33. -> It took one hour to wash his car.

34. -> The box was so heavy that the child couldn’t carry it.
-> It was such a heavy box that the child couldn’t carry it.

35. -> It was such an interesting film that we have seen it twice
-> The film was so interesting that we have seen it twice

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15. The price of this picture is different from that picture.
16. Mr.Brown speaks the same language as Mrs.Kent.
17. Mr. Phong teaches the same subject as Mrs. Ha.
18. I like pop music and my brother does, too.
19. The colour of this painting is different from that painting.
20. The new sculpture is as high as the old sculpture.
21. The nationality of Van Gogh is different from Picasso./ Van Gogh's nationality is different from Picasso's.
22. Hoa sings as beautifully as Hoa's sister.
23. Iron is harder than Stone.
24. He plays the guitar better than me.
25. Ho Chi Minh City is the largest city in Vietnam.
26. He spoke so quickly that I couldn't understand.
27. He speaks so slowly thatt his students get bored.
28. These questions are so difficult that we can't answer.
29. It took them three years to build that bridge.
30. The sea was too rough for the children to go swimming.
31. It took me two hours to finish my assignment.
32. It took us three hours to open the door.
33. It took him one hour to wash his car.
34. The box was so heavy that the child couldn't carry.
It was such a heavy box that the child couldn't carry.
35. It was such an interesting film that we saw it twice.
The film was so interesting that we saw it twice.