Use reduced relative clauses in place of the relative clauses

Dùng cùng một khối lượng KClO3 và KMnO4 để điều chế oxi trong phòng thí nghiệm. Dùng chất nào để thu được nhiều oxi nhất?

1. The accident happened because he drove …………………………... (care) 2. Air …………….……is one of the problems that people have deal to with. (pollute) 3. Traditional ………………..…... are a good source of fun and entertainment. (celebrate) 4. You should buy this book . It’s very…………………………….. (inform) 5. (Tradition)………….………................……., people eat sticky rice cakes at Tet.

1.we /not/ see/ each other/ for/ 5 years. …………………………………………………………………………………………… 2. Mr Bill/ used/ go /swimming/ when/ he/ young. ……………………………………………………………………………………….…… 3. She / be / best / student / class. ………………………………………………………………………………………… 4. How long / it / take / you / go / school / everyday? …………………………………………………………………………………………

TÌM TẤT CẢ SỐ TỰ NHIÊN X ;Y KHÁC 0 SAO CHO Y+1 :X VÀ X+1:Y

1. He has never been late for work. - Never…………………………………………………………………………………… 2. The man is my new boss. He is talking to the lady over there. - The man ………………………………………………………………………………… 3. “Does Mr. Pike live here?” the postman asked the boy. - The postman asked the boy ……………………………………….……………………. 4. They will build a new school next month. - A new school……………………………………………………..…………………….. 5. Finding an apartment in a big city is not easy. - It is …...............................................................................................................................

I. Choose the word whose underlined part is pronounced differently from the others. 1. a. behaved b. passed c. entertained d. changed 2. a. imagination b. average c. language d. appearance 3. a. bags b. graphs c. lands d. days II. Choose the word that has the main stress placed differently from the others. ( Trọng âm) 1. a. museum b. monument c. cathedral d. contestant 2. a. religious b. situate c. calendar d. literature III. Choose the best answer a, b, c or d to complete the sentence. 1. The limestone formation of Thien Duong Cave is more than that of Phong Nha Cave. a. spectacular b. probable c. geological d. sight-seeing 2. During Perfume Pagoda festival, a large number of flock to the pagoda to pray for happiness and prosperity in the coming year. a. spectators b. passengers c. pilgrims d. travellers 3. In the 17 th century, the Viet people the temple tower, calling it Thien Y Thanh Mau Tower. a. put on b. looked for c. got into d. took over 4. It that Po Nagar Cham Towers were built in the 8 th century. a. considered b. was considered c. has considered d. considers 5. I suggest that you Ha Long Bay. It’s very picturesque. a. to visit b. visiting c. visited d. visit 6. A: You really must go to Hoi An to enjoy the full moon at Mid-autumn Festival. - B: . a. Yes, that’s what I’ve heard. b. Do you really know about it? c. Yes, I won’t go there. d. No, thank you. 7. Ben a lot in his job but now, since his promotion, he doesn’t. a. was used travel b. used to travel c. used to traveling d. were used to traveling 7. When I see the kids playing football, I almost wish I at their age again. a. would b. could c. would be d. could be 9. “In the past, marriages used to be arranged by parents.”- “ ” a. Sure. That’s right. b. I suppose it was. c. Really? I can’t imagine that d. That’s cool! 10. “Monica is such a nice person.” “Yes. I wish I her more often.” A. see B. will see C. saw D. have seen IV. Indicate the underlined part that needs correction in each of the following sentences.( Tìm lỗi sai trong câu) 1. Sometimes our efforts on protecting man-made wonders of the city aren’t full appreciated. A B C D 2. I’d prefer leave early because I have a conference with my son’s teacher tomorrow at three thirty. A B C D 3. I wish I were have his mobile phone number so that we could tell him the good news. A B C D 4. Despite giving a second chance, she couldn’t manage to pass the exam. A B C D 5. Alan didn’t use to raising chickens, but it’s different now she has her own. A B C D V. Write the correct form of the words in brackets.( cho dạng đúng của từ trong ngoặc) 1. People who are lack the basic reading and writing skills. (literate) 2. This approach can help identify common and their causes. (behave) 3. I found the ending of the novel a bit . (believe) 4. We got a lot of from our holiday in Da Nang last year. (enjoy) 5. Bai Dinh Pagoda is a site which is located in Ninh Binh province. (religion) VI. Read the text and choose A, B, C, or D for each of the questions below. Of all the natural wonders of the world, few are as spectacular as Niagara Falls. Located on the Niagara River along the border between the United States and Canada, Niagara Falls actually consists of two falls, the American Falls and the Horseshoe Falls: The former is on the US side of the border, in the state of New York, while the latter is on the Canadian side. About 85% of the water in Niagara River flows over the Horseshoe Falls, which is the more impressive of the two falls. About 10 million people visit the falls each year, most during the summer tourist season. Sightseers can ride steamers up close to the boiling water of the falls, or view them from parks on both sides of the river. Niagara Falls has long been a popular honeymoon destination for newly weds. 1. Which of the following is entirely on the US side of the border with Canada? A. Niagara River B. American Falls C. Niagara Falls D. Horseshoe Falls 2. It can be inferred from the passage that Horseshoe Falls........ A. is the larger of the two falls. B. is the less impressive fall. C. has 15% of the Niagara River flowing over its edge. D. is in the state of New York. 3. According to the passage, where can people watch the falls? A. From trains B. From airplanes C. From parks or boats D. From cars or buses 4. In line 7, the word 'them' refers to........ A. steamers B. sightseers C. parks D. waterfalls 5. According to the passage, Niagara Falls........ A. is a favourite spot for newly weds. B. generates very hot water C. can be viewed from only one side of the Niagara Falls. D. is only impressive during the summer tourist season. VII. 2. Although I had all the necessary qualifications, they didn’t offer me the job. → Despite 3. “Please do not litter as you are walking along the coast”, the guard said to us. → The guard told 4. I haven’t bought any clothes since my trip to Hanoi.

Cho các số nguyên a1,a2,..., a2003 thõa mãn a1+a2+...+a2003=0 và a1+a2=a3+a4=...=a2001+a2002 Tính a1, a2,a2003

Giải giùm mình nha Thank you người làm

Trên mặt phẳng toạ độ Oxy , hãy vẽ hình thang ABCD , biết toạ độ các đỉnh là : A(1;0) , B(1;4) , C(5;4) , D(7;0) . Gọi trung điểm các cạnh AB,BC,CD,DA lần lượt là M,N,P,Q . Tìm toạ độ các điểm đó .