một hình chữ nhật có diện tích là 100 m^2 . nếu giữ nguyên chiều dài tăng chiều rộng lên 2 lần thì diện tích là bao nhiêu

6). Sử dụng Such that hay so that để hoàn thành các câu bên dưới 1. Jessica is a brilliant woman that everyone admires her. 2. He made an unforgivable mistake that it caused him his marriage. 3. She is shy that she would only talk to her parents. 4. The teacher was tired that she had to dismiss the class.

Hòa tan hoàn toàn 18 gam một kim loại M cần dùng 800ml dung dịch HCl 2,5M. Xác định kim loại M. Biết hóa trị của kim loại trong khoảng từ I đến III.

Trong văn bản “Bài học đường đời đầu tiên ” của Tô Hoài, em thấy thương nhân vật nào nhất ? Vì sao ?

3.A. clothes B. fireworks C. scissors D. mountains 4.A. stadium B. place C. paddy D. lake 5.A. lunch B. music C. unpopular D. study II. Complete the sentences below using the correct form of comparative or superlative adjectives. Ex: - Lan is Hoa. (tall) Lan is taller than Hoa. - Nam is student in his class. (young) Nam is the youngest student in his class. 1. A new house is ……………………………… an old one. (expensive) 2. Motorbikes are ……………………………… bicycles. (fast) 3. My television is ……………………………… his television. (modern) 4. Summer is ……………………………… Spring. (hot) 5. Jane is ……………………………… her sister. (beautiful) 6. Skirts are ……………………………… dresses. (cheap) 7. Her English is ……………………………… my English. (good) 8. A bicycle is often ……………………………… a car in busy cities. (convenient) 9. Nile River is ……………………………… river in the world. (long) 10.This book is ……………………………… of these books. (interesting) 11. Ho Chi Minh City is ……………………………… city in Viet Nam. (big) 12.They are ……………………………… students in my class. (good) 13.These houses are ……………………………… in the village. (beautiful) 14.Winter is ……………………………… season in the year. (cold) 15.Airplane is ……………………………… means of transport. (fast) III. Give the correct form of the verbs in the simple future. 1. ……………………………… (they / come) tomorrow? 2. When ……………………………… (you / get) back? 3. If you lose your job, what……………………………… (you / do)? 4. They ……………………………… (do) it for you tomorrow. 5. My father ……………………………… (call) you in 5 minutes. 6. ……………………………… (she / get) the job, do you think? 7. We believe that she ……………………………… (recover) from her illness soon. 8. What ……………………………… (the weather / be) like tomorrow? 9. I promise I……………………………… (return) from school on time. 10. ( you / show )……………..me how to operate the new machine, please ? IV. Fill in the gap with should/ shouldn’t/ must/ mustn’t : 1.I don’t think you ………………………eat so much chocolate. It’s bad for your health. 2.I think waiters………………………………try to be pleasant with customers. 3.If you feel sick, you ……………………………… stay at home. It’s better for you. 4.I ……………………………… get my hair cut. I don’t like long hair. 5.We ………………………… go home. My mother has told me to arrive at ten o’clock. 6.I ……………………………… study hard. I want to pass the exam. 7.You ……………………………… accept things from strangers! 8.You ……………………………… steal things from shops.

Viết 3 pthh trong mỗi pt đều có phi kim tác dụng với các hợp chất sinh ra khí hidro

I. MULTIPLE CHOICE 1. I bought a lot of different gifts in a _________ . a. temple b. food stall c. restaurant d. souvenir shop 2. The family __________ an apartment next door to mine. a. moved b. arrived c. rented d. stayed 3. We stopped at a restaurant __________ a short time. a. in b. at c. on d. for 4. She ____________ some new clothes last week. a. buys b. will buy c. bought d. to buy 5. Most of Vietnamese people are very _________ . 6. famous b. important c. friendly d. comfortable 7. __________ to the office yesterday? a. Do you go b. Did you go c. Will you go d. Are you going 8. Peter _________ Xuan Huong Lake 3 days ago. a. visited b. visits c. visit d. will visit 9. MsNhung learned how _________ a sewing machine. a. uses b. used c. using d. to use 10. They ___________ anything at the restaurant yesterday. a. don’t drink b. didn’t drink c. aren’t drinking d. won’t drink 11. My brother __________ into a new apartment last Summer. a. move b. moved c. moves d. will move 12. What _________ 3 hours ago? a. do you do b. did you do c. will you do d. are you doing 13. When _________ he born? a. is b. are c. was d. were 14. Thanh’shobby is playing soccer. a. pastime b. activity c. sport d. subject 15. They arrived _________ home yesterday afternoon. a. in b. at c. to d. on 16. Hoa watched her neighbor _________ her dress. a. make b. to make c. making d. made 17. __________ is a person who lives near you. a. Hairdresser b. Neighbor c. Teacher d. Dressmaker 18. She ________ but it didn’t fit. a. tried it on b. tried it up c. tried on it d. tried it up 19. Hoa thinks that sewing is a _________ hobby. a. favorite b. friendly c. useful d. twenty 20. My brother returned home last night. a. arrived b. came back c. traveled d. visited II. READING a. Read the passage: Choose the word (A, B, C or D) that the best fits the blank in the following passage: 1/Hoa is writing a letter to her mom. She says that she is glad (1) ________ her parents were well. She is doing well at school now. At first, everything was strange and (2) ________ . But she is having a lot of fun at the moment. She hopes her parents (3) ________ Ha Noi after the harvest. She will show her parents (4) ________ the city. And she will tell her parents (5) ________ about her because she knows (6) ________to take care of herself. 1. a. hear b. to hear c. to hearing d. hearing 2. a. difficult b. different c. hard d. a & c 3. a. visit b. will visit c. visits d. visiting 4. a. around b. of c. at d. on 5. a. not worry b. not to worry c. worried d. to not worry 6. a. how b. what c. why d. who 2/ Teeth are important for chewing food and talking. Without teeth, we can only eat soft food. It will be hard for us (1) ________ without teeth. The food that we eat can affect our teeth. Too (2) ________ sugar can make acid. This acid begins to eat away the teeth. Cavities in the teeth are holes made by acid. Most children love cola drinks. One of cola (3) ________ ten teaspoons of sugar. So we should avoid kinds of food with lots of sugar. Another way we can take care of our teeth is by(4) ________ them. We should brush our teeth at least twice a day. Also, we must give our teeth special treatment by visiting the(5) ________ twice a year. We should look after our teeth carefully. I hope all of us(6) ________ know how to keep our teeth healthy and beautiful. 1. a. speaking b. speak c. to speak d. spoke 2. a. much b. many c. lots of d. plenty 3. a. have b. has c. is having d. had 4. a. seeing b. watering c. showering d. cleaning 5. a. doctor b. dentist c. engineer d. teacher 6. a. will b. could c. might d. would

Giúp mik câu 1 và câu 2 vs Ai lm đúng, nhanh nhất sẽ đc vote 5* và 1 cảm ơn

my brother grew a lot of trees in the garden chuyển sang câu bị động

Bài 17. Cho lăng trụ tam giác ABC.DEF. Gọi G, H, I, J, K lần lượt là trung điểm của AE, EC, CD, BC, BE. Chứng minh ba vecto AJ GI HK đồng phẳng