III. Give the correct form of verbs 31. I think we (have) ________ electric taxis very soon. 32. My father used (tell) ______ us stories when I (be) ______ was seven. 33. A new school (build) ________ for poor children next month. 34. Duong (not go) _________ on a picnic last Sunday because she (be) ______ ill. 35. At 6.30 tomorrow, we (cycle) ___________ to school. 36. When my grandfather (be) _________ young, he used (smoke) ________ a lot. 37. What you (use) _________ to do in your free time? I used to go jogging. 38.Where you (go) _________ last night? I (go) __________ to the cinema. 39.The man (not use) _________ to go to work in the evening last month. 40.What ______ you (do) ________ at the moment? I (watch) ___________TV. 41. Next week at this time, you (lie) _________ on the beach. 42. People mustn’t (smoke) __________ in the hospitals. 43. She (not come) ____________ here for a long time. 44. On the way to school there (be) __________ two hospitals. 45. He usually (go) _________ fishing on Saturdays. 47. How about (see) ________ a movie on Sunday evening? 47. Nam (learn) __________ English for 8 years. 48. Last night, my father (watch) ____________ TV. 49. Low energy light bulbs (use) ___________ in the future. 50. I don’t think it (be) ____________ pleasant.

tìm x: a, $\sqrt[2]{1-2x}$+ $\sqrt[2]{1+2x}$= $\sqrt[2]{\frac{\sqrt[2]{1-2x}}{\sqrt[2]{1+2x}}}$ +$\sqrt[2]{\frac{\sqrt[2]{1+2x}}{\sqrt[2]{1-2x}}}$ b, $\sqrt[4]{x}$+$\sqrt[4]{1-x}$+$\sqrt[2]{x}$-$\sqrt[2]{1-x}$=$\sqrt[2]{2}$+$\sqrt[4]{8}$ c, $\sqrt[2]{8+x^{3}}$+$\sqrt[2]{64-x^{3}}$= $x^{4}$-8$x^{2}$+28 d, $\sqrt[2]{2-x^{2}}$+$\sqrt[2]{2-\frac{1}{x^{2}}}$=4-(x+ $\frac{1}{x}$)

II. Find and correct the mistakes 21. We didn’t used to have a colorful TV, but we do now. A. didn’t B. used to C. have D. do 22. When my baby sister is younger, she didn’t use to eat pizza. A. is B. younger C. didn’t use D. to eat 23. It’s about 500 meters at my house to school. A. It’s about B. meters C. at D. to 24. On my way home get school, I sometimes see a train pass by. A. On B. get C. sometimes D. pass 25. Did he use to crying all night when his father died. A. Did B. use to C. crying D. died 26. “When will you decide to get married with? - “With my boyfriend, Huy” A. When B. decide C.to get D. With 27. Despite the weather was bad, we had a good time. A. Despite B. was bad C. had D. good time 28. I’d like to tell you some funny stories. But, I know you are busy. A. to tell B. funny stories C. But D. are 29. She got the highest score in her class although her illness. A. got B. highest score C. although D. illness 30. “How do you go to school?” - “In a buses” A. How B. go to school C. In a D. buses

Đề trên là hãy dùng các từ gợi ý để viết thành câu hoàn chỉnh

làm hojjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

1)3x³+6x²+3x-12x² 2)a³-ab³+a²+2ab+b² 3)(x²-9y²)-(4x+12y) 4)(x²-16y²)-3x+12y

A là 1 số tự nhiên có 2020 chữ số, A chia hết cho 9; B là tổng các chữ số của A; C là tổng các chữ số của B; D là tổng các chữ số của C. Tính D

Viết chương trình để tìm lời giải cho bài toán sau: Trong giỏ vừa thỏ vừa gà, Một trăm cái cẳng bốn ba cái đầu. Hỏi có mấy gà mấy thỏ?

art lại pic này nha, tradi hay digi đều được

Làm bài 1 giúp mik nha helpp me