Viết lại câu sao cho nghĩa không đổi

1. The last time I went to Ho Chi Minh City was ten years ago.

It___________________________________________.

2. Although he was very tired, he tried to help me with my homework.

Tired as ___________________________________________.

3. The car is too expensive. I can’t afford it.

It was ___________________________________________.

4. It's the first time I've been to New York.

I haven’t ___________________________________________.

5. “ You damaged my camera", said Hung to his sister.

Hung accused ___________________________________________.

6. We didn't have any holidays until this summer.

It was not___________________________________________.

7. If you hadn’t studied hard, you would have failed the exam.

Had ___________________________________________.

8. Lan is pretty but Mai is prettier.

Mai is the___________________________________________.

9. This is the best film I’ve ever seen.

I’ve ___________________________________________.

10. My school has over 800 students.

There are ___________________________________________.

11. People say that that plane crashed into the mountains.

That plane ___________________________________________.

12. She tries to learn English well so as to communicate with foreigners.

She tries to learn English well with ________________________

13. I started teaching English three years ago.

I have___________________________________________.

14. No one in my class is more intelligent than Lan.

Lan ___________________________________________.

15. This exercise was very difficult. We couldn’t do it.

This exercise was so___________________________________________.

16. But for your help, I couldn’t have passed the exam.

Had ___________________________________________.

17. “When will you come back, Nga?”

I asked ___________________________________________.

18. No one has bought this house.

This house ___________________________________________.

19. She didn't take an umbrella so she got wet.

She wouldn't ___________________________________________.

20. It was a mistake for him to buy that house.

He shouldn’t _________________________________________.

cho tam giác ABC. qua A kẻ aa' song song với BC. chứng minh

góc ABC+ góc BAC+ góc BCA =180 độ

tìm x,y,z:

x/2=y/-3=z/4 và x-y+3=z

một thỏi vàng pha lẫn bạc có khối lượng riêng 18660kg/m^3. Hãy tính hàm lượng phần trăm của vàng trong đó biết khối lượng của vàng là 19.3g/cm^3, của bạc 10,5cm^3

tìm x,y,z biết:

x-y/2=y-z/3=z-x/4 và x+y+z=3

x-y/2=y+1/3=x+2/4=z-3

giá trị tuyệt đối x/2=y-2/3=z-3/2 và 2x-y+3=5