CHỈ CẦN TỪ ĐIỀN VÀO THÔI NHA!!! Bài 7:Điền “since” hoặc “for” vào chỗ trống 1. She has been in Vung Tau ................ January. 2.Ha and Nam have seen this film .............. 7 o’clock. 3. I have sent her 3 letters ................. last week. 4. My sister has worked at that hospital .................. 5 years. 5. I have known her ................ we were at elementary school. 6. Nam has become a footballer ................. 3 years. 7. She’s been in London ................ Monday. 8. Mike has lived in Hanoi ................ four years. 9. I have written to her ................... Christmas. 10. We’ve not seen her ................... last month. Bài 8:Chia động từ trong ngoặc ở thì hiện tại hoàn thành. 1. I (live) here since 1989. 2. They (work) for this factory for 20 years. 3. He (read) this novel three times. 4. Hoa and I (know) each other since we were at the same class. 5. I (not/see) her since last month. 6. I (not/work) have not worked today. 7. We (buy) a new lamp. 8. We (not/plan) our holiday yet. 9. Where (be/you) ? 10. He (write) five letters. 11. (be/you) at school? 12. School (not/start) yet. 13. (speak/he) to his boss? 14. No,he (have/not) the time yet. 15. The cat (just/catch) a mouse. 16. He (already/invite) his friends. 17. Julia (make) a table with three columns. 18. The teacher (lose) the keys,so he can’t open the door. 19. I (just/clean) my bike. 20. My friends (give up) smoking.

1)a)C6H5CH3+Br2(t độ) C6H5CH3+Br2(Fe,t) C6H5CH=CH2+ Br2 C6H5CH=CH2+ HBr nC6H5CH=CH2→ 2)Từ CH4 điều chế: Cao su buna, benzen, PE và PVC Viết ptpu điều chế cao su isopren từ isopentan, điều chế etilen từ ancol etylic, điều chế metan từ nhôm cacbua; từ natriaxetat, điều chế benzen từ axetilen.

Giúp mk cần gấp từ câu 15 hộ mk sẽ vote 5s

Một tàu thủy chạy trên một khúc sông dài 80km, cả đi lẫn về mất 8h20p. Tính vận tốc tàu thủy khi nước yên lặng, biết rằng vận tốc dòng nước bằng 40km/h.

Giải giúp mình câu b,c bài 2 với! ( Mình đang gấp lắm nên chưa chụp ảnh) b/ 17/27 - ( x+1/5)^3= -47/27 c/ -4/7= x-40/31-5x Mình cảm ơn trước ( Nhanh nhanh nha bạn )

Lấy CH4 đun ở 1500độc rồi làm mạnh nhanh ,thu được hỗ hợp X có tỉ khối đối với hiđro là 6,4 hiệu suất phản ứng là

nêu cách tạo và mở văn bản mới? cách lưu văn bẳn

57. A. morning B. afternoon C. evening D, time 58. A. but B. or . and D. with 59. A. colour B. seed C. tree D. leaf 60. A. to B. at C. from D. for II. Fill in each blank with ONE suitable word. (10 pts) Mr. Thomas is... .....(61) engineer in a big factory. He lives in a small apartment............(62) the eleventh floor of a building in Da Nang City. The factory is ............ (63) near his house, so he goes to work by bus. He leaves .........(64) at 7 o'clock to arrive to work at 7.45.............(65) is Saturday morning now, and Mr. Thomas is..............(66) home, in bed. On Saturdays he...........(67) up at a quarter to seven. Then he sits in the living room and...........(68) breakfast. On Saturday aftemoons he............(69) tennis or goes swimming. On Saturday evenings, he ............ (70) stay at home, he usually goes out. III. Read the following passage and answer the questions below (5 pts) Some people think that sports and games are unimportant things. In fact, sports and games can be of great value, especially to people working with their brain most of the day Sports and games make our bodies strong and keep us healthy. But these are not Làm phần II nha

Phrases with hold B. Study these phrases with hold and complete the sentences with the most appropriate one in each case in the correct form. Replace one’s with the correct possessive form. hold a conversation • hold forth • hold good • hold an inquiry, investigation hold the line • hold one’s own • hold one’s tongue • hold hands 1. The Ministry are ______________________ into the disappearance of some secret documents. 2. Although the patient is still on the danger list following the operation, there has been no change in his condition so at least he’s ______________________. 3. The argument is valid in this case but I doubt if it would ______________________ in all circumstances. 4. The lovers were ______________________ as they walked down the street. 5. I was itching to tell him what I thought of him but decided it would only lead to trouble so I ______________________. 6. I’ve exchanged a few words with him now and then but we’ve never ______________________. 7. ______________________ please! We’re trying to connect you. 8. He loves the sound of his own voice. He ______________________ for an hour or more on his favourite topic. Transformation C. For each of the sentences below, complete the second sentence so that it has a similar meaning to the first sentence, using the word given. Do not change the word given. You must use between three and eight words, including the word given. 1. I can’t stand his brothers and sisters, without taking his awful mother into consideration. alone I can’t stand his brothers and sisters, _____________________________________. 2. The best thing you can do in this situation is to keep quiet. hold In this situation I __________________________________________ if I were you. 3. I don’t feel like arguing at this moment. mood I’m not ___________________________________________ at this moment. 4. Peter doesn’t like the idea and Paul doesn’t, either. nor Neither ____________________________________________ the idea. 5. They are completely different from each other. common They have ____________________________________________. 6. The meal we had yesterday was far better than this. nearly This ________________________________________ the meal we had yesterday. 7. Our situations are very similar. difference There’s not _______________________________________ your situation and mine. 8. You had no right to speak to her like that. spoken You ___________________________________________ to her like that.

Vẽ naruto cso tô màu đủ điều kiện vote 5 sao