Cho 24g oxi tác dụng với H2SO4 có trong dung dịch loãng. a) Tính thể tích khí hidro sinh ra (đktc). b) Tính khối lượng của H2SO4

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1. a. Passing the kitchen, he stopped ‘’drinking/ to drink’’ a large glass of water. b. They stopped ‘’talking/to talk’’ when the teacher walked into the classroom. 2. a. Although she asked him to stop, he went on ‘’tapping/ to tap’’ his pen on the table. b. Dr Harris welcomed the members of the committee and went on ‘’introducing/ to introduce’’ the subject of the meeting. 3. a. I regret ‘’telling/ to tell’’ you that the model you want is out of stock. b. It cost me a fortune, ‘but I don’t regret ‘’spending/ to spend’’ a year travelling around the world. 4. a. Remember ‘’checking/ to’’ check your answer before handing in your exam paper. b. I remember putting/ to put the money in the top drawer, but it&’s not there now. 5. a. Have you forgotten meeting/ to meet me years ago? b. Don’t forget finding out/ to find out how many people are coming on Saturday. 6. a. I tried ‘’getting/ to get’’ the table through the door, but it was too big. b. I tried ‘’taking/ to take’’ some aspirin, but the pain didn’t go away. 7. a. He needs ‘’working/ to work’’ harder if he wants to make progress. b. It’s difficult problem. It needs ‘’thinking/ to think’’ about very carefully. 8. a. I think Nick meant ‘’breaking/ to break’’ that glass. It didn’t look like an accident. b. If we want to get there by 7. 00, that means ‘’getting/ to get’’ up before 5. 00. 9. a. Can you help me ‘’getting/ to get’’ the dinner ready? b. He looks so funny. Whenever I see him, I can’t help ‘’smiling/ to smile’’ 10. a. I’d advise ‘’taking/ to take’’ more exercise. b. I'd advise you ‘’taking/ to take’’ more exercise. tìm từ đúng ạ