IV. Complete the sentences with suitable question words. 1. He doesn’t know to ask for advice about this situation. 2. Be sure to eat when you arrive in Vietnam. 3. They are going to tell me to do to survive in a storm. 4. I asked Jane to show me to deal with bullying at school. 5. He wondered to start revising for the final exam. 6. The rules didn’t specify to speak to in case of an emergency. 7. You need to find out to overcome stress and worry. 8. I don’t know to turn for help. 9. I had no idea to write my home paper about. 10. Tell me to press the button. V. Rewrite the following sentences using question words before to-infinitives. 1. I don’t know where I should visit this summer vacation. 2. Could you tell me who I should ask for advice? 3. She wondered what she should write in the final essay. 4. I have no idea who I should contact in case of emergency. 5. They can’t decide when they leave for America. 6. I’m not sure what I should cook for my son’s birthday party. 7. Could you tell me where I should put my umbrella? 8. He asked himself what he should send her as a present. 9. I have no idea when I should leave for Japan. 10. She wondered how she should resolve the conflict.

Chứng minh rằng: $a, P_{n}= (n-1)P_{n-1} + (n-2)P_{n-2} +...+2P_{2} + P_{1} +1$ $b, 1 + \dfrac{1}{1!} + \dfrac{1}{2!} + \dfrac{1}{3!} +...+ \dfrac{1}{n!} < 3$ $c, \dfrac{n^{2}}{n!} = \dfrac{1}{(n-1)!} + \dfrac{1}{(n-2)!}$

ko cần làm bài 6 ạ, khỏi giải thích. Nhanh là được

Giúp e vs mn ơi! Cần giải thích nx nha! Vote 5*

I. Complete the sentences with the words from the box. There are two words that you do not need to use. 1. He gets when people don’t understand what he’s trying to say. 2. I’m not about her - she can take care of herself. 3. She was very as she waited for the interview. 4. The teacher wants the children to feel about asking questions when they don’t understand. 5. Anna got 10 marks for her English test. She felt absolutely about that result. 6. She’s terribly about losing her job. 7. He told himself to stay whenever he was put into a harsh situation. 8. As soon as I had made the final decision, I felt a lot more . II. Turn the following sentences into reported speech. 1. “Our daughter wants to study abroad for a year,” they said. 2. “Have you ever experienced school pressures?” she asked me. 3. “Yesterday I couldn’t watch my favourite cartoon on Disney Channel,” he said. 4. “Is the weather good in Shanghai in the summer?” Jane asked me. 5. “What are the skills that you find the most difficult to learn?” she asked me. 6. “Would you bring me a cup of coffee, please?” she told me. 7. “I’ll come and help you on Saturday,” Joana told me. 8. “When will you come back home?” my mom asked me. 9. “Did you need any help on this assignment?” the teacher asked me. 10. “My friend got engaged to a German last month,” Danny told Ann. III. Complete the sentences with correct tense of verbs. 1. The interviewer asked me what I (can) do if I were offered the job. 2. Mandy asked me if the boys (read) the book at present. 3. The manager told me that I (travel) from place to place the following month. 4. They said they (never/ be) to Scotland until last year. 5. Jason and Victoria told me they (do) their best in the exams the following day. 6. I wondered why Nick (not go) to New York the summer before. 7. John told me that there (may) not be dessert after dinner. 8. She asked me if everyone (must) contact the Magic Number in emergency situations. 9. My mom said she (be) going to visit a friend of hers in London. 10. Shannon said that she (need) to take care of her baby.

Trên này ai nhiều fan nhất nhở :V Vẽ mầm ._.

Một người mỗi tháng ăn hết 1/4 lương,trả tiền nhà hết 1/6 tiền lương,tiêu vặt hết 1/10 lương. Cuối tháng người đó để dành được 5.800.000. Tính lương tháng của người đó

Cân Bằng giúp mình với! 1. MgCl2 + KOH  Mg(OH)2 + KCl 2. CuSO4 + NaOH  Cu(OH)2 + Na2SO4 3. CuCl2+ NaOH --> Cu(OH)2+ NaCl 4. Cu(OH)2 + HCl  CuCl2 + H2O 5. Cu(OH)2 + H2SO4  CuSO4 + H2O 6. FeO + HCl  FeCl2 + H2O 7. Fe2O3 + H2SO4  Fe2 (SO4)3 + H2O 8. Cu(NO3)2 + NaOH  Cu(OH)2 + NaNO3 9. P + O2  P2O5 10. N2 + O2  NO 11. NO + O2  NO2 12. NO2 + O2 + H2O  HNO3

Tìm các giá trị của m để phương trình $x^4-2(m+2)x^2+2m+3=0$ có 4 nghiệm phân biệt lập thành một cấp số cộng.

vễ mầm ik ạ (vẽ đẹp nha xấu tui vote < 4* á NL: HÓNG