Cho hai đại lượng tỉ lệ nghịch x và y; x1, x2 là hai giá trị tương ứng của x; y1, y2  là hai giá trị tương ứng của y. Biết x1 = 2, x2 = 5 và y1 + y2 = 21. Khi đó y1 = ?

A. y1 = 14

B. y1 = 6

C. y1 = 15

D. y1 = 51

 Âm không thể truyền trong môi trường nào dưới đây

quan sát lược đồ và trình bày những nét chính về tổ chức nhà nước thành bang A - ten . Ưu điểm và hạn chế của nhà nước thành banh A -ten

Task 1: Give the correct form of the words in the blank.
1. We (not drive) .......................... to work every day. We (go) .......................... by bus.
2. Where ……. your new friend (live) ................., Nga?
She (live) ............................. on Hang Bai street.
3. ……… you (be) .................... in class 7A?
No, I (be) .......................... in class 7D.
4. How often ..................... she (go) ...................... fishing?
- She (go) ............................. once a year.
5. (Be) ............................. your friends ............................. students?
Yes, they (be) .............................
6. My grandfather ………………. (buy) some fruits at the supermarket at the moment.
7. Hannah ………………… (not study) French in the library. She‟s at home with her
classmates.
8. ……………………. (she/ run) in the park now?
9. Look! My dog ………………. (eat).
10. What …………………….. (you/ wait) for at present?

VI. Rewrite these sentences begin with the given words. 1. Her book is not the same as mine. ➔ Her book is _____________________________________________ 2. She loves to play the violin. He loves to play the violin. ➔She loves ________________________________________ 3. The listening exercise is more difficult than the reading exercise. ➔The reading exercise _____________________________________ 4. People grow rice in tropical countries. ➔ Rice _________________________________________________ 5. My sister and I don’t often go out at night. ➔ My sister doesn’t often go at night, __________________________ 6. They are interested in playing soccer. ➔ They love _____________________________________________ 7. My mother isn’t as tall as my father. ➔ My father is _____________________________________________ 8. He missed the first bus because he got up late. ➔ He got up late, ___________________________________________ 9. Summer is hotter than winter ➔ Winter is __________________________________________________________ 10. She pays a lot of money for the customer. ➔ a lot of money ________________________________________________________________ 11. I am interested in watching TV in the evening. ➔ I enjoy ____________________________________________________________ 12. I think that learning English is important. ➔ I find _______________________________________________________________ 13. My brother enjoys coffee very much. ➔ Coffee ____________________________________________________________ 14. People speak English all over the world. ➔ English __________________________________________________________________ 6 15. They built the museum in 1990. ➔ the museum _________________________________________________________________ giúp vs ak

Circle the underlined word/ phrase that needs correcting and correct it. 1. We find carving eggshells is difficult. ➔ ________ 2. You should eat more junk food because it is not good for your health. ➔ ________ 3. Your shoes are the same size like mine. ➔ ________ 4. We were at home last night, so they were. ➔ ________ 5. His homework was did yesterday afternoon. ➔ ________ VIII. Rearrange the words to form the meaningful sentences 1. from / my sister’s / is / mine / dress / different / _______________________________________________________________ 2. was /she/ because/ late/ of/ heavy/ the/ rain _______________________________________________________________ 3. There / some / are / of / bottles / water / mineral / in / fridge / the/ ____________________________________________________________________ 4. by / the house / surrounded / is /police /the/ ____________________________________________________________________

giúp em vs ak