x, y, z là các hợp chất hữu cơ mạch hở chứa 3 nguyên tố C, H, O đều có tỉ khối đối với H2 là 23. Tìm CTPT và viết CTCT của x, y, z

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I>Complete the second sentence so that it has a similar meaning to the first 1.It's not a good idea to travel during the rush hour. -> It's better to avoid___________________________________________________________ 2.Michael laughed when I told him the joke. ->The joke______________________________________________________________________ 3.Don't stop him doing what he wants. ->Let____________________________________________________________________________ 4.We like to lie on te beach all day. -> We enjoy_____________________________________________________________________ 5.Do you fancy going for a walk? ->Would you like________________________________________________________________ 6.I wish I hadn't taken tour advice. ->I regret _______________________________________________________________________ 7.Seeing Nelson Mandela will always stay in my memory. -> I'll never forget_______________________________________________________________ 8.It was difficult for me to stop laughing at Wendy's letter. ->I couldn't help_________________________________________________________________ 9.Shall I phone you this evening? ->Do you want__________________________________________________________________ 10.It will be good to see them again. -> I'm looking ___________________________________________________________________ 11.I'd prefer not to go out tonight. ->I'd rather______________________________________________________________________ 12.You'd better put your money in the bank, Jack. ->I advised______________________________________________________________________ 13. I can do what I want and you can't stop me. ->You can't _____________________________________________________________________ 14.Please don't interrupt me all the time. ->Would you mind______________________________________________________________ 15.My father said I could use his car. ->My father allowed____________________________________________________________