calli : xã hội Việt Nam không còn như xưa

Cần gấp .Giúp mik với mn ơi

Có thể dùng chất nào dưới đây làm khô khí o2 có lẫn hơi nước

18. I/ not/ know/ what/ do/ make/ mother/ happy/. A. I not know what do to make mother happy B. I don’t know what to doing make my mother happy. C. I don’t know what to do to make my mother happy. D. I don’t know what doing to make my mother happy. 19. engine/ car/ need/ clean/ once/ month/. A. The engine for the car need to clean once a month. B. The engine of the car needs cleaning once a month. C. The engine with the car needs to be cleaned once a month. D. The engine of the car needs to clean once a month. 20. many/ place/ the world/,/ people/ used/ dye/ cloth/ nature/ material/. A. In many places in the world, people used dyeing cloth by natural materials. B. In many places in the world, people used to dye cloth with natural materials. C. In many places in the world, people used to dyeing cloth by natural materials. D. In many places in the world, people used to dye cloth with nature materials. 21. book / I / just / read / interesting/. A. The book whom I have just read is interesting. B. The book who I have just read is interesting. C. The book which I had just read is interesting. D. The book which I have just read is interesting. 23. Children / should have / special day / express / feeling / memories / /love/their parents/. A. Children should have a special day expressing their feeling, memories and love to their parents. B. Children should have a special day express their feeling, memories and love for their parents. C. Children should have a special day to express their feeling, memories and love for their parents. D. Children should have a special day expressing their feeling, memories and love for their parents. 25. It/ be claimed/ The Cham towers/ Binh Dinh province/ biggest/ Southeast Asia/. A. It is claimed that The Cham towers in Binh Dinh province is the biggest in Southeast Asia. B. It is claims that The Cham towers in Binh Dinh province is the biggest in Southeast Asia. C. It is claimed that The Cham towers in Binh Dinh province be the biggest in Southeast Asia. D. It is claimed that The Cham towers in Binh Dinh province to be the biggest in Southeast Asia. 26. The local government/ suggest/ build a road/ through Nam Cat Tien Park/. A. The local government suggested building a road through Nam Cat Tien Park. B. The local government suggest building a road through Nam Cat Tien Park. C. The local government suggested build a road through Nam Cat Tien Park. D. The local government suggested to build a road through Nam Cat Tien Park. 27. Her mother/ suggest/ Mary/ go/ see the dentist/. A. Her mother suggested Mary going to see the dentist. B. Her mother suggests that Mary goes to see the dentist. C. Her mother suggested that Mary should go to see the dentist. D. Her mother suggested that Mary went to see the dentist.

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calli : Đằng sau sự hòa nhoáng của người con là sự lam lũ,vất vả của người cha người mẹ" Câu nói này thật đúng với xã hội hiện tại ! đua đòi =( ko nghĩ đến cha mẹ =(( :((

giúp mình câu C với ạ S= 1+ √x √x

Dây đơn cứng là dây dẫn điện có ? A. Lõi gồm 1 sợi xoắn lại bằng đồng hoặc nhôm có vỏ bọc B. Lõi gồm 1 sợi xoắn lại bằng đồng hoặc nhôm không có vỏ bọc

x^2.x 5-9x=45 Giúp em với ạ, em đang cần gấp.

Giú p em với ai. Em cảm ơn nhiều ạ