Supply the correct form of verbs 1. Look! The plane ( fly)..............towards the airport. It ( land)...................... 2. What about ( go) ............... to the cafeteria? 3. Would you like ( come)............ to my house for dinner tonight? 4. Mai often ( not write).............to her old friends in Hue. 5. My mother wants me ( buy) .........two kilos of potatoes. 6. How many floors your school ( have).................?

This passage contains ten errors. Dear Peter, I am a student in grade six in a school in Hanoi 0._________at ______ city and this year I am twelve year old. I live in 1._________________ a house with me parents and my brother and my 2._________________ sister in a country. It is very beautiful and quiet. 3._________________ I ride at school with my close friends every morning. 4._________________ I like listening to music and play soccer. On the 5._________________ weekends I often go out with his friends. Sometimes 6._________________ we go to the cinema (about one a week), and 7.__________________ sometimes we just go for a walk. My favorite subject 8.__________________ at school are Math, English and Literature, and I don’t like 9.__________________ Geography. What about you? Please write with me soon 10.__________________

Each sentence has one mistake. Find and correct it. 1. One of my brothers have two eggs and some bread for breakfast. 2. Our teacher gives us much homeworks today. 3. My family is traveling to Ho Chi Minh City by a bus at present. 4. Most people doesn’t go to work on Sunday. 5. Our classroom is on the two floor. 6. His sister often goes to school with an orange small bag. 7. Mai always helps her mother in the housework. 8. Would you like an apple or any orange juice? 9. My father is in his room now and he reads some news on the Internet. 10. A lot of my friends play soccer, but not much of them play tennis.

Hãy nêu nội dung giáo dục của bài Ca-chiu-sa Giúp mình với 🙏🙏

21. How many eggs do you need, Mom ? - ………………. A. a half dozen B. half a dozen C. a dozen half D. dozen a half 22. Hoa’s house is not near her school so she goes to school __________. A. on foot B. by bike C. by a bike D. on bus 23. There is __________ opposite the drugstore. A. the police station B. a police station C. police station D. police stations 24. What’s the time now? ~ It’s __________twelve o’clock. A. at B. nearly C. near D. most 25. __________care when you bring that dish. It’s hot. A. Be B. Have C. Make D. Take 26. Why don’t we go to the zoo? ~ __________. A. Because I’m going B. Let’s drive there C. It takes an hour D. That’s a good idea 27. Mary is the __________of the two girls. A. small B. smallest C. smaller D. smaller than 28. There is __________bread on the table. A. a B. an C. some D. many 29. How far is it from your house to school? ~ __________. A. About ten miles B. About two hours C. At 10 o’clock D. In some minutes

hệ tuần hoàn máu đi từ đâu đến đâu vậy ạ

11. _____________do you get there? – We walk, of course. A. Why B. What C. How by D. How 12. What time _____________ on television? A. is the news B. are the news C. is news D. are news 13. I am very tired. - ___________. A. Me too B. for me the same C. Also me D. I also 14. Don’t be late __________ your school. A. on B. at C. to D. for 15. The weather often ______ quickly. It is difficult to forecast. A. change B. changes C. is changing D. is going to change 16. When it becomes hot, people often feel ______ A. hungry B. thirsty C. happy D. worried 17. When you go out, please buy two ………… of soap for me. A. rods B. bars C. tubes D. bottles 18. They usually go …………. after work. A. to fishing B. to swimming C. cinema D. home 19. Everyone is having ………… at the picnic. A. good time B. good times C. the good time D. a good time 20. Do you have any toothpaste? I’d like a large….………….. A. box B. bar C. tube D. packet

hỗn hợp khí sau hỗn hợp X gồm 2a mol H2 và a mol khí CO2, hỗn hợp Y gồm 3b mol khí H2 và 2b mol SO2, hỗn hợp Z gồm 3c mol khí CO2 và 8c mol khí N2 .tính tỉ khối của hỗn hợp khí trên so với không khí. help me!

Choose the best answer from A, B, C or D to complete each of the following sentences. 1. What would you like …………………dinner? A. with B. at C. for D. of 2. We are going to have an English examination ………………… April, 21st . A. on B. to C. at D. in 3. …………………are a sandwich and an ice-cream? -They’re two thousand dong. A. How many B. How much C. What D. Where 4. I eat an apple every morning. It’s my…………………fruit. A. good B. like C. favorite D. cold 5. …………………is your uncle going to stay here? - ……………… about three days. A. How long - For B. How far - For C. How long - At D. How long - From 6. ..........................do you do when it’s hot? - I go swimming A. Who B. What C. When D. Where 7. I want a good pair of shoes because I always goes …………………in the morning. A. sailing B. swimming C. jogging D. fishing 8. Ho Chi Minh city is .....................city in Viet Nam. A. big B. bigger C. the big D. the biggest 9. Why don’t we go to the zoo this Sunday morning? A. You are well B. Because I don’t like animals C. That’s a good idea D. Thanks a lot 10. Is her face round………………… oval? A. and B. or C. but D. of

TÌm tất cả các đa thức f(x) có các hệ số nguyên thõa mãn điều kiện : (x+1).f(x)=(x-2).f(x+2) và f(0)=1