27/She.......blood twenty times so far. A.donates B.has donated C.is donating D.to donate 28/He.....lectures to foreign about traditional food and games recently. A.gives B.gave C.have given D.has given 29/They have decided to clean up the neighborhood..........it is full of rubbish. A.so B.but C.although D.because 30/"Have you ever...........to SA Pa"? A.gone B.been C.seen D.visited

Trên tia ox lấy các điểm a ,b ,C a = 6 cm, OB = 3 cm, OC = 9 cm a, so sánh AB và AC b, chứng tỏ b là trung điểm của oa c chứng tỏ a là trung điểm của BC ê

Nêu hiên tượng, viết PTHH giải thích: 1)Nhỏ dd NaOH dư vào dd CuSO4,sau đó nhỏ tiếp dd HCl vào chất sản phẩm 2)Nhỏ từ từ dd AgNO3 vào ống nghiệp có chứa dd HCl 3)Nhỏ từ từ ddBaCl2 ống nghiệp có chứa dd H2SO4 4)Nhỏ dd HCl vào một mẩu đá vôi có tp (CaCO3) 5)Cho 1 mẩu giấy quỳ tím vào cốc chứa dd NaOH, sau đó nhỏ đến dư tiếp dd HCl vào. 6)) Cho 1 lá Cu vào cốc dd H2SO4 đặc rồi đun nóng 7)Nhỏ dd H2SO4 đặc vào cốc có chứa đường saccarozo

I. Give the correct form of the words in brackets. 1. The noise in the city kept Hoa...............................................at night. (Wake) 2. In...............................................to that, my bike tires was flat. (Add) 3. Mr. Tan has a very......................................................tooth. (Pain) 4. Then, Thanh....................................a pan and stir-fried the beef. (Hot) 5. Sugar is not an..................................food because we need it to live. (Health) 6. Catching the common cold is........... .......for every body. (Please) 7. Don't worry! Your cold will last for a few days and then...................... ( Appear) 8. I have......................................time to play than my friend. (Little) 9. Mr Pike didn’t go to work yesterday because of his… ……….……….… (ill) 10. Tra Giang is one of the most famous….………of Viet Nam. Many people love her. (act)

III. Modal verbs: S + modal verb + V(bare inf.) 1. It isn’t necessary for you to wake up early. => You don’t ___________________________________________________ 2. You are not allowed to make noise here. =>You mustn’t _________________________________________________ 3. Don’t stay up late every night. => You shouldn’t _______________________________________________ 4. It’s better for you to review what you have learned. => You should _________________________________________________ 5. It’s necessary to revise new words regularly. =>You should _________________________________________________

Giải hộ mình từ bài 1 đến bài 4

GIÚP MÌNH CẦN GẤP Ạ!!!! Write sentences in the causative form as in the example. 2. She doesn’t like asking people to do her shopping 3. Have you asked them to install a burglar alarm for you? 4. I didn’t use to employ someone to do the housework for me 5. The doctor examined her wound 6. He isn’t going to take his glasses to be adjusted today 7. Did the detective order the constable to follow the suspect? 8. You should ask someone to collect your mail while you are away 9. Did the doctor set Gary’s broken leg? 10. Will she get someone to check her washing machine for her? 11. We’re going to ask them to send us a copy of the contract 12. Has the chauffeur been driving Mary’s kids to school for years? 13. Was his arm broken in a car crash? 14. How many times has the plumber fixed John’s tap this year?

Tính giúp em câu b ạ . Giải chi tiết giúp em

Mình đang cần gấp chiều nay nộp rồi. Cảm ơn trước nha

giúp mik ạ ai đúng cho 5 sao và ctlhn nhanh nhé c.ơn mn nhìu^^