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baongan11092001
2 năm trước
a) Ch3cooNa+ch4 Ch4+c2h2 c2h2+c2h4 c2h4+c2h6o c2h6o+ch3cooh ch3cooh+ch3coona b) viết phản ứng cháy với rượu etylic và axit axetic ch3cooh+c2h5oh d) phản ứng thủy phân chất giúp mình với nha
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EXERCISE III: Write who, that, which, or nothing to complete these sentences : 1.Have you got the money ___________ I lent you yesterday ? 2.Peter, ___________ I had seen earlier, wasn’t at the party. 3.This is the machine ___________ cost half a million pounds. 4.Mary, ___________ had been listening to the conversation, looked angry. 5.Have you read the book ___________ I gave you ? 6.The hous, ___________ they bought three months ago, looks lovely. 7.Mrs.Jackson, ___________ had been very ill, died yesterday. 8.Is this the person ___________ stole your handbag ? 9.The dog, ___________ had been very quiet, suddenly started barking. 10. I didn’t receive the letters ___________ she sent me. 11.My mother, ___________ hadn’t been expecting visitors, looked surprised. 12.The old man, ______ had been talking to them earlier, knew that they were in the building. 13.The horse, _________ had been injured by the flying stones, was very frightened. 14.We didn’t like the secetary ___________ the agency sent. 15.I didn’t find the money ___________ you said you’d left.

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