Did nobody come to the party before last night?...

Mỗi giờ xe máy đi được:

121:4 = 30,25 (km)

Mỗi giờ ô tô đi được:

111 : 2 = 55,5 (km)

Vậy hơn là:

55,5 - 30,25 = 25,.25

Trung tâm công nghiệp nào sau đây không thuộc dải công nghiệp tập trung ở Nam Bộ

A. TP. Hồ Chí Minh

B. Cần Thơ

C. Biên Hoà

D. Vũng Tàu

identical...

1. They built this church in 1973.

=> This church was built in 1973

2. Do they teach English in your school?.

=> Is English taught in your school?

3. Nobody believes his story..

=> His story isn't belived

4. Someone is following her.

=> She is being followed

5. They asked me many difficult questions.

=> I was asked many difficult questions

6. They are repairing my piano.

=> My piano is being repaired

7. They are building a house, aren’t they ?.

=> A house is being built, isn't it?

8. Students are doing a lot of homework.

=> A lot of homework is being done by the students

9. Can Mary tear the letter ?

=> Can the letter be torn by Mary?

10. Do you understand this lesson?

=> Is this lesson understood?

11. She looked after our children when we were out.

=> Our children were looked after by her when we were out.

12. Nobody has used this room for ages

=> This room hasn't used for ages

13. The boy hit the dog in the garden yesterday.

=> The dog is hit in the garden by the boy yesterday

14. Who wrote this book?

=> Who was written this book ?

15. Who has cleaned this room?

=> Who has this room been cleaned

16. The fire has caused considerable damage.

=> The considerable damage has been caused by the fire

17. The committee is considering several new proposals.

=> Saveral new proposals are being considered by the committee

18. No one may open this letter, may they ?

=> This letter may not be opened, may it?

19. They bought her a present on her birthday.

=> She was bought a present on her birthday

20. Someone has told him to report for duty at 6.00pm

=> He has been told to report for duty at 6.00 pm

21. The author has written a special edition for children.

=> A special edition has been written for children by the author

22. They make these artificial flowers.

=> These artificial flowers are made

23. Does John return the book he borrowed yesterday ?

=> Is the book John borrowed yesterday returned?

24. They are pulling down the old theatre.

=> The old theatre are being pulled down

25. we use this room onlyon special occasions.

=> This room is used only on special occasions

26. Have they told you anything about it?

=> Have you been told anything about it?

27. What language do they speak in Japan?

=> What language is spoken in Japan?

28. Someone has taken her bag by mistake.

=> Her bag has been taken by mistake

29. They haven’t done anything about it.

=> Anything about it hasn't done

30. It is time some one told him what is wrong.

=> It is time for someone to be told what is wrong

Phù.... còn 20 câu bn tự làm ha -.- mỏi tay quớ

...50 câu.... đề bài là j zz bn?

Dây dẫn thẳng dài có dòng  I 1 = 15   A  đi qua, đặt trong chân không. Tính lực từ tác dụng lên 1 m dây của dòng I 2 = 10   A  đặt song song cách I 1  đoạn 15 cm. Biết rằng I 1 ,   I 2  ngược chiều nhau

A.  2 . 10 - 4 N

B.  10 - 4 N

C.  4 . 10 - 4 N

D.  3 . 10 - 4 N

1 he (start) started to play the violin five years ago

2 he (ride) rode a horse before

3 john (not go) hasn't gone to school for over six month

4 the flight to moscow (last) last three and a half hours (chuyến bay, lịch trình được chia ở thì hiện tại đơn)

5 three year ago he (be) was a student at a university in california

6 he wrote four best-sellers before he (be) was twenty years old

7 when did you(see) see mary?

- Quán tính là t/chất giữ nguyên của vật khi chịu 2 lực cân bằng và thay đổi dần khi lực thay đổi.

VD:
- Khi ngồi trên xe, đột ngột rẽ trái thì hành khách trên xe bị nghiêng người sang bên phải

... đoạn văn nào bn