Viết lại câu: I have never stayed in such an expensive hotel before

1. She generally (sing)....in French but today she (sing)...in English.
2. I have never stayed in such an expensive hotel before.
-> This is the first...
3. Nga hasn't come here since 2000.
-> The last time..
4. Flying to Hanoi took us eight hours.
-> It took....
5. She has studied English for 5 years.
-> She began...
6. I told him off. Then I realized I was wrong.
-> After...
7. Avoiding traveling during the rush hour is better.
-> It is...
8. Just after finishing his homework, Joe turned on thr TV.
-> As soon as he..
9. After John had washed his clothes, he began to study.
-> Before..
10. Nam started building the house three months ago.
-> Nam has..
11. Fred fell off the ladder while painting the wall.
-> While Fred was..
12. I haven't had a Chinese meal for ages.
-> It's ages...
13. He came in and found his son watching TV.
-> When he...
14. I last saw him when I was a students.
-> I haven't...
15. Learning English is very interesting.
-> It is...
16. Linda rarely (go)...to school by bike, but today she (ride)...a bike
17. The lastest train (leave)...at 10:30 everyday.
18. Listen! I (think)...someone (knock)...at yje door.
19. How many times you (see)...him since he went to Edinburgh?