102/25 + 5/21 + 1, 5 - 2/25 + 16/21

Ex4. Complete the conversation with the present perfect, past simple or present simple form of the verbs in brackets. A: ……………… you ……………… (1. hear) anything from Julia in the last few weeks? B: Yes, she’s in Madrid. She ……………… (2. be) there since Saturday. A: Oh, yeah! I ……………… (3. forget) about that. ………………she ……………… (4.go) with her parents? B: Yes, I think so. They (5. go) ……………… to Madrid every Christmas. I think her brother (6. live) there. He (7. be) ……………… there for a couple of years. A: I ……………… always ……………… (8. want) to visit Madrid. It’s such a beautiful city. B: Oh yes, I remember that. ……………… you ……………… (9. pass) them all? A: No, I ……………… (10. fail) Spanish so I decided to take extra classes. I ……………… (11. start) them in September. B: So, ……………… your Spanish ……………… (12. get) better since then? A: Yes, I think so. I ……………… really ……………… (13. improve) my vocabulary, especially since I met Pedro! B: Who ……………… (14. be) Pedro? A: He’s my new boyfriend. We ……………… (15. be) together for three weeks now! Ex5. Rewrite the sentences using the words given. 1. The wind is blowing hard, so I won’t take the boat out for a ride. IF - 2. Paulo is working on two jobs right now, so he doesn’t have time to help you with your problems. IF 3. I am not fluent in English, so I can’t study abroad. IF - 4. The sun isn’t shining. WISH - I 5. My husband invited the neighbors over for dinner. I don’t feel like cooking a big dinner. WISH - I 6. We don’t have enough money to buy what we wants. WISH - We 7. He quit my job last week and he haven’t found another one. WISH - He 8. It isn’t winter, so I can’t go skiing. WISH - I

Bài 1:Rút gọn a)2 căn 28 + 3 căn 63 - 5 căn 112 b)Căn 4x-20 +3 . căn x-5/9 c)3/a^2-b^2 . căn 2(a+b)^2 /9 d)-a/b . căn b/a ( a>0, b>0) e) 1/1-5x . căn 3x^2(25x^2-10x+1)(0<=x<1/5) Bài 2: Tìm GTNN của a)A=Căn x-2+2 căn x-3 +căn x+6+6 căn x-3 b)B=căn x^2 - 6x +9 + căn x^2 -10x +25

Choose the word whose main stress is placed differently from that of the others. 1. A. message B. furniture C. cousin D. invent 2. A. countless B. service C. transmit D. answer 3. A. invention B. agreement C. arrangement D. demonstrate 4. A. exhibition B. introduction C. emigration D. stationery 5. A. orphanage B. delivery C. experiment D. directory

những đẳng thức đáng nhớ giúp với ạ

đố ai làm đc bài này đấy thách luôn

This is the firt time shannon (see) the paddies

`text{Câu 1: Tìm các số nguyên x ; y thõa mãn:}` $/x-1/+2./x-2/+/y-3/=1$ `text{Câu 2: Tìm các số nguyên tố x ; y thõa mãn:}` `x^2-2y^2=1` LÀM GẤP Ạ.

Nhận xét tranh chi tiết + calli : Kazutora Y/c : Có tâm một tí giúp mình nhé :vvv

Chia ở thì thích hợp ạ, gấp m.n ơi