Rút gọn biểu thức $C=\frac{\sqrt{x}-\sqrt{y}}{xy\sqrt{xy}}:\left[\left(\frac{1}{x}+\frac{1}{y}\right).\frac{1}{x+y+2\sqrt{xy}}+\frac{2}{\left(\sqrt{x}+\sqrt{y}\right)^3}.\left(\frac{1}{\sqrt{x}}+\frac{1}{\sqrt{y}}\right)\right]$ Với $x=2-\sqrt{3}$ và $y=2+\sqrt{3}$

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Câu 2 phần B thôi nha mọi người!!!

77. My father (fight)…………. for 4 years in the last war. 78. I’m taking my daughter out tonight. She (not have)…………..fun for a long time. 79. When I (look)………… at my suitcase, I could see that somebody (try)……….to open it. 80. When we (get)…………. to the restaurant, we (find)……….that nobody (remember)…………………..to reserve a table. 81. The doctor (examine)……….him, and that he (break)………..his arm. 82. As soon as she arrived England, she (find)……..that the language (be)……quite different from the English that she (learn)………………..at school. 83. I’m going to bed. I (work)………………..for hours and I’m tired. 84. Good afternoon. Can I help you? – Yes. I (bring)……………...my watch to youfor repair 3 weeks ago. Is it ready yet? 85. I wanted to be the first to tell her the news, but I was too late. Someone (already tell)……………………her. 86. He (come) ………in to the room a moment after I (get)……. there. 87. I hardly (be)………there 5 minutes when Mrs. Brown (come)…………in with the coffee. 88. Scarcely they (move)…………….. into the new house when their friends (come)……..in. 89. I (meet)……………...John before I (be)…………….. a fortnight in Paris. 90. He no sooner (reach)……..the door than he (come)…….back. 91. He (have) ……… a bad fall while he (repair)………his roof. 92. By the end of this month, I hope, I (write)……………………200 pages of my new novel. 93. It (take)…….a moment before Nick (realize)…………...he (offer)……… a cigarette by the stranger. 94. While he ( learn)……. to drive he (have)……… 25 accidents. 95. It’s no using getting inpatient. The plane (not arrive)……..until the weather (clear)……up. 96. I (think) ……..about you a lot lately and I (come)……… to the conclusion that I( not be) ……..able to live without you. 97. I don’t mind ( wait)………I’d rather (be)……………….too early than too late. 98. Those students who (fail)………the exam are going to take another one held in August. 99. “ I am just going out to get an evening paper.” “ But it (rain)……….Why you (not wait)…………….. till the rain (stop)………? 100. I (think)……… your father’s health (improve)………so much since I (see)……him last.

tả cơn mưa rào tả cánh đồng lúa chín viết hay hứa cho 5 vote

Mọi người giúp mk câu 38 với ạ

1 bể kính có hình lập phương cạnh 50 cm . phải đổ bao nhiêu lít nước để thể tích nước bằng 60 phần trăm thể tích bể

phân tích ông Sáu, bé Thu trong truyện chiếc lược ngà

1. It is thought that there are too many obstacles to peace there are................................................................ 2. please do not smoke in this area of the restaurant customers are............................................... 3. A new film has not often before produced such positive reviews Rarely.................................................. 4. the police think the burglar got in through the bathroom the burglar................................................................ 5. his mother was the most warm-hearted person I've ever known. I've.................................................................................... 6. people believe that the prime minister will resign tomorrow the prime minister...................................................... 7. they are going to repair our car next week we.................................................... 8. although it was raining heavily, all the gusets came in spite............................................. 9. people know that he is very rich he.............................................. 10. it is believed that the man was killed by terrorists the man................................................ 11. people think taht the company is planning a new advertising campaign the company.......................................................... 12. iot was reported that the president had suffered a heart attack the president........................................................................ 13.people know that the expedition reached the south pole in May the espeditio................................................................ 14. it is expected that the weather will be good tomorrow the weather............................................................. 15. it is reported that the damage is extensive the damage.............................................. 16. I haven't seen him and I haven't heard him speak either neither....................................................... 17. Tom arrived late and started complaining Not only............................... 18. I'd like to visit India more than any other country in the world It's India.................................................. 19. that was a silly thing to say! what....................................... 20.collecting stamps from foreign countries is one of jane's interests Jane is.......................................................................

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