x ( x - 1 ) = 20 giải phương trình giúp e vs ạ

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A) Use the correct tense: 1. He ……………………………… (not / live) in Đstanbul if he ………………… (hate) it. 2. If you …………………………… (write) the letters, I ……………………… (post) them. 3. If you …………………………… (not / leave) immediately, I ………………………. (call) the police. 4. If he …………………………….. (not / arrive) soon, we ………………………. (have to) have dinner without him. 5. I …………………………………… (not / have to) borrow any money from you if I …………………………… (get) my salary tomorrow. 6. If you …………………………… (invite) her to the dance, she ………………………(be) very pleased. 7. If you ………………………… (retire) soon, you …………………………….. (make yourself ill. 8. If you ………………………………. (write) him a letter, he ……………………….. (know) our address. 9. If the policeman had seen the thief, he …………………………………………….. (arrest) him. 10. The buildings wouldn’t have burned to ashes if the firemen ………………………………. (come) in time. 11. People wouldn’t cross the Bosphorus, if they ……………………………………………… (not / build) those bridges. 12. If the family had saved enough money, they………………………………………… (buy) a new flat. 13. If I had known that he was sleeping, I ……………………………………………. (not / disturb) him. 14. If I had lost all my money, I …………………………………………... (be) very unhappy. 15. If you had phoned me before you came, you ………………………………………. (find) me at home. B) Complete the following sentences in column A using the correct choice from column B. A B 1. You’ll get tired a) If you can’t have it. 2. If you go to a football match, b) If students make a lot of noise. 3. You can’t hear the teacher c) you must take your umbrella with you. 4. I’ll help you with your lesson, d) If you stand up for a long time. 5. If the soup is too hot, e) If you’re at home tonight. 6. If it rains, f) If you want to study. 7. His family may go on holiday g) you won’t find a seat. 8. A man can’t buy what he needs h) If they save enough money. 9. If you’re on a crowded bus, i) If he doesn’t have enough money. 10. We’ll come to visit you j) I’ll buy a car. 11. If they haven’t seen Topkapý Palace, k) we’d better go there this afternoon. 12. If I get a driving licence, l) I’ll come with you. C) Complete the following sentences: 1. If you write me from England, …………………………………………………………….. 2. She can learn English if ……………………………………………………………………. 3. We can catch the bus if …………………………………………………………………….. 4. If it doesn’t rain this afternoon, ……………………………………………………………. 5. His family will be hungry if ……………………………………………………………….. 6. Your room will become untidy if ………………………………………………………….. 7. A baby cries if ……………………………………………………………………………… 8. If my girlfriend comes early, ………………………………………………………………. 9. If he doesn’t smoke, ……………………………………………………………………….. 10. You can’t sleep well if ……………………………………………………………………..

Question 1: Mark the letter A, B, C, or D on your answer sheet to indicate the word OPPOSITE. There is growing concern about the way man has destroyed the environment. A. ease​B. consideration​C. attraction​D. speculation Question 2: Mark the letter A, B, C, or D on your answer sheet to indicate the word OPPOSITE. She is carrying out a health project for the disadvantaged in inner cities and rural areas. A. coastal​B. suburban​C. urban​D. mountainous Question 3: Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in the following question. A. inaccessible​B. magnificence​C. musician​D. imperial Question 4: Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in the following question. A. school​B. spoon​C. flood​D. moon Question 5: Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in the following question. If you don’t know what to start the computer, you should read this instruction. A B ​​ C ​​ D Question 6: Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in the following question. A. shops​B. walks​C. calls​D. notes Question 7: Mark the letter A, B, C, or D on your answer sheet to indicate the word CLOSEST. We arranged to meet at 7.30, but she never turned up. A. come​B. went​C. arrived​D. reaches Question 8: Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in the following question. When we are on holiday, we used to go to the beach every day. A B C D Question 9: Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in the following question. The students seemed very nervously before the final exam. A B C D Question 10: Mark the letter A, B, C, or D on your answer sheet to indicate the word CLOSEST. The most important thing is to keep yourself occupied. A. relaxed​B. busy​C. comfortable​D. free