Đáp án: It is the first time I have ever spoken to a foreigner.

46. No one has seen Peter since the day of the party.
à Peter ______hasn't been seen since the day of the party. _______________________________________________________________________.
47. We haven’t seen him for over twenty years.
à It’s _______over 20 years since we last saw him_______________________________________________________________________.
48. She went to the zoo last year and that is where she saw a real tiger for the first time.
à Before she ______________went to the zoo, she had never seen a real tiger before__________________________________________________________.
49. We couldn’t drive because of the fog.
à The fog prevented _________us from driving_________________________________________________________.
50. He used to depend on his parents for money.
à No longer _________does he depend on his parents for money. ________________________________________________________________.
51. It is the most interesting novel I’ve ever read.
à I have ______never read such an interesting novel______________________________________________________________________.
52. Although she lived in difficult conditions, she worked very hard.
à In spite of _________living in difficult conditions, she worked very hard. ________________________________________________________________.
53. The flight to London lasted more than three hours.
à It _____took more than three hours to fly to London___________________________________________________________________________.
54. The weather was so bad that we couldn’t go sailing.
à The weather was not _________good enough for us to go sailing._______________________________________________________.
55. The big oak tree was in the garden, but then they cut it down.
à There used _____to be a big oak tree was in the garden ___________________________________________________________________.  

46. No one has seen Peter since the day of the party.
à Peter _______has not been seen since the day of the party ______________________________
47. We haven’t seen him for over twenty years.
à It’s ______over twenty years since we have seen him______________________________________.
48. She went to the zoo last year and that is where she saw a real tiger for the first time.
à Before she ___went to the zoo last year, she hadn't seen a real tiger_____________________________________________________________________.
49. We couldn’t drive because of the fog.
à The fog prevented ___us from driving_______________________________________________________________.
50. He used to depend on his parents for money.
à No longer ________does he depend on his parents for money. _________________________________________________________________.
51. It is the most interesting novel I’ve ever read.
à I have ________never read such a interesting novel____________________________________________________________________.
52. Although she lived in difficult conditions, she worked very hard.
à In spite of _______living in difficult conditions, she worked very hard __________________________________________________________________.
53. The flight to London lasted more than three hours.
à It _____took more than 3 hours to fly to london_______________________________________________________________________.
54. The weather was so bad that we couldn’t go sailing.
à The weather was not _____good enough for us to go sailing___________________________________________________________.
55. The big oak tree was in the garden, but then they cut it down.
à There used ___to be a big oak tree in the garden_______________________

Đáp án: If people use a lot of vehicles, he air will be polluted.

Let's use public buses instead of motorbikes.

-> I think you should use public buses instead of motorbikes.

- Let's use public buses instead of motorbikes.

=> I suggest you should use public buses instead of motorbikes.

- Let's use public buses instead of motorbikes.

=> I suggest you should use public buses instead of motorbikes.

.......... is used to retell the story of Le Mat village

Đáp án: Vietnamese students have to wear uniforms when they go to school.

17. He finished his book a minute ago. (just)

He …………………has just finished……………………his book.

18. Daisy is the most beautiful girl in her family. (as)

No one ……………is as beautiful as Daisy…………………………in her family.

19. “When did you last see him?” the policeman asked me. (had)

The policeman asked me when was the last time I saw him

20. His brother gave up smoking when he was twenty-five. (smoked)

His brother ………was smoking…when he was twenty-five.

Minh swims quickly.