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tinhocdcm1986
2 năm trước
Bai 1: Hòa tan hòa toàn 2,3 gam Na vào 47,8 gam nước thu được dung dịch X. Tính nồng độ phần trăm của dung dịch X Bài 2: Hòa tan hoàn toàn 4,7 gam K2O vào 400 ml nước thu được dung dịch Y. Tính nồng độ mol của dung dịch Y Mn giúp mk giải
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Ex 8: Give the correct form of the verbs in the brackets. 1. It often __________________ in Ireland (rain). 2. __________________ there now (rain)? 3. Susan __________________ to her parents every Sunday night (write). 4. Stop at once! You __________________ the flowers every time the ball __________________ in the garden (break, land) 5. Where is Kevin? He __________________ tennis with Sue. (play) 6. She normally __________________ in Northbridge but she __________________ with friends at the moment. (live, stay) 7. Hurry up, the teacher __________________ to begin (wait). 8. I __________________ a word Tim says (not believe). 9. The new lawnmower __________________ well at the moment (work) 10. What __________________ do for a living? (you, do) 11. As a secretary I __________________ hundreds of letters every week (write). 12. My boss __________________ to change jobs soon (want) 13. Look! She __________________ in the non- smoking area (smoke) 14. We __________________ our break now, Mr. Smith (take) 15. The well-known actor __________________ a lot of fan mail (get) 16. Dorothy __________________ to read a good novel in her holidays (love) 17. My brother __________________ Italy the very moment I speak (tour) 18. Such bad behaviour __________________ me mad (make). 19. He usually __________________ out on Saturday night. (go) 20. She __________________ by train to Liverpool today. (depart) Ex 9: Fill in the blanks by using the correct verb form. My driving course __________ (go) well and, to my surprise, I ________ (enjoy) it very much. Harry and Liz, who run the driving school in my area, __ (seem) very professional. But what I like most about them is that they _________ (feel) like friends rather than teachers. I know I’m making a lot of stupid mistakes (still!) but they keep saying: ‘Don’t worry. You __________ (learn). Everybody ________ (need) to go through this stage’. They always _________ (concentrate) on the positive and __________ (support) me in every way. It’s great that Anna from my school __________ (do) the course with me. At the moment we __________ (practice) different driving manoeuvres. Anna ________ (find) them really difficult but she __________ (get) better and better. I ___________ (think) we will both pass our driving test in March.

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