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Cho các chất sau: a.Khí Clo : Cl2 b.Khí Etilen: C2H4 c.Caxicacbonat: CaCO3 d. Đồng sunfat CuSO4 hãy nêu những gì biết được về chất trên. Giúp mình đi mà mình hứa vote 5 sao
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Circle the correct word or phrase. 1 I (work / am working) at the local library for the summer. 2 We (don't go / aren't going) to the theatre very often. 3 Stacy (gets / is getting) ready for school, so she can't come to the phone. 4 (Does Gary ever talk / Is Gary ever talking) about his expedition to the Amazon jungle? 5 In squash, you( hit / are hitting )a ball against a wall. 6 I (read /am reading) a newspaper at least once a week. for two 7 (Do you practise / Are you practising) the piano for two hours every day? 8 Nadine and Claire (do / are doing) quite well at school at the moment. 9 A good friend (knows / is knowing) when you're upset about something. 10 How (do you spell / are you spelling) your name? Điền vào chỗ trống với những từ sau: boil, close, cost, cost, like, like, meet, open, teach, wash 1. In Britain the banks usually...............at 9.30 in the morning 2 The City Museum...............at 5 o'clock in the evening 3. Tina is a teacher. She..................mathematics to young children 4. My job is very interesting. I................a lot of people 5. Peter.............his hair twice a week 6. Food is expensive. It..................a lot of money 7. Shoes are expensive. They..............a lot of money 8. Water................at 100 degrees Celsius 9. Julia and I are good friend. I..............her and she........me

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