HTHT and QKĐ 18She started learning English ten years ago. * A. She has not learnt English before. B. She has learnt English since ten years. C. She has started learning English for ten years. D. She has learnt English for ten years. 19“Why don’t you put a better lock on the door?" said John. * A. John suggested put a better lock on the door. B. John asked why not putting a better lock on the door. C. John suggested putting a better lock on the door. D. John made us put a better lock on the door. 20I haven’t eaten this kind of food before. * A. This is the first time I’ve eaten this kind of food. B. I haven’t eaten this kind of food already. C. This is the first kind of food I have eaten. D. Even before I have not eaten this kind of food. 21My brother and I go to that school * A. I went to that school and my brother, too B. I went to that school and so my brother did C. I went to that school and so did my brother D. I went to that school and so my brother did, too 22“Would you like to stay for dinner?” she asked me. * A. She asked me if I liked to stay for dinner. B. She invited me to stay for dinner. C. She offered me dinner. D. She was very kind to offer me dinner. 23“Would you like to come to my birthday party, Sarha?” asked Frederic. * A. Frederic invited Sarha to come to his birthday party. B. Frederic asked if Sarha was able to come to his birthday party. C. Frederic asked Sarha if she likes his brithday party or not. D. Frederic reminded Sarha of his coming birthday party. 24I have not met her for three years. * A. The last time I met her was three years ago. B. It is three years when I will meet her. C. I did not meet her three years D. During three years, I met her once. 25He started learning French six years ago. * A. He has learned French for six years. B. It was six years ago did he start learning French. C. He hasn’t learnt French for six years. D. It is six years since he has learnt French. 26He last had his eyes tested ten months ago. * A. He had tested his eyes ten months ago. B. He had not tested his eyes for ten months then. C. He hasn’t had his eyes tested for ten months. D. He didn’t have any test on his eyes in ten months

Cho a,b,c > 0 và a+2b+3c $\geq$ 20. Tìm GTNN của S= a+b+c+$\frac{3}{a}$ +$\frac{9}{2b}$ +$\frac{4}{c}$

Circle the mistake: chỉ cần lm câu 26, 27, 28, 30 thui nha

1.Great Wall is one of the ……………… wonders of the world. (nature) 2.My parents are proud of me because I’m a ……………… singer. (fame) 3. It is an ……………… landmark of the world. (amaze) 4. This river is so ……………… (length) 5.They are going to ……………… a new bridge near here. (building) 6.I like the ……………… of the romantic river. (beautiful)

Giúp mình với!!! Cho sự vật được so sánh:trăng,phương diện so sánh:khuyết Hãy tạo ra năm phép so sánh có sự vật dùng để so sánh khác nhau.

Giải toán về phương trình hàm Giúp với Thích làm bài nào cũng được

$\text{Cho hệ phương trình }$ $\text{(I)}$ $\begin{cases} mx-y=2m (1)\\x-my=1+m(2)\end{cases}$ $\text{a) Xác định m để hệ phương trình có nghiệm duy nhất}$ $\text{b) Xác định m để hệ phương trình có nghiệm nguyên}$

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Giúp mình với mình cảm ơn các bạn

Tìm GTNN của P= a + b + $\frac{1}{2a}$ + $\frac{2}{b}$ biết a +b > 0 và a + b $\geq$ 3