giúp em câu c,d với ạ em cảm ơn nhiều

Giúp mik đổi mấy câu này nha Ghi đáp an thôi

Tìm hiểu tiểu sử,hoạt động về các mác (sẽ cho ctlhn)

trung hòa 500ml dd Ba(OH)2 0,4M bằng 200ml dd H2SO4 x (M )--> m (g) BaSO4

công thức tiếp xúc parabol :)) ????

Giúp em phương trình này với ạ.

Ghi lại tất cả công thức hóa học lớp 8?

6. A. Did that book write C. Was that book writing 7. Acupuncture is part of traditional Chinese medicine(TCM) and years. A. has been used 8. Mr. Snow A. hasn't taught 9. The injured A. have taken 10. It by your father? B. Did that book written D. Was that book written in China for thousands of D. has been using B. has using that course since 1985. B. haven't taught to the hospital in an ambulance. B. was taking C. has used C. have been taught D. taught C. were taken D. were taking that the painting is a fake. A. believed B. is believed C. is believing D. was believing 11. Her watch needs A. repairing 12. He C. repaired D. A&B B. to be repaired if he keeps up his excellent performance. B. will be promoted a member in your sport center one day. C. promoted D. promotes A. promote 13. Perhaps I A. am becoming B. am going to become 14. Although I give my student some advice, he A. isn't going 15. Each natural oil the oil is used for. C. become D. will become with me to the hospital. C. not go B. isn't going to D. won't go its own mix of active ingredients, and this mix determines what B. contains A. are contained C. is contained 17. My friend's cooking books A. hasn't been finished B. haven't been finished 18. Nerve signals A. send 19. The room is being D. is containing since April. C. haven't finished to and from the brain as fast as 170 miles or 273 kilometres per hour. D. hasn't finished B. are sent C. sent D. are sending at the moment. A. was cleaned 20. The road to our village A. is B. cleaned C. cleaning D. clean widened next year. C. can B. will D. will be.

tại sao con người là thực thể câu hỏi ở dưới (chỉ mình cách đăng kí steam đi??)

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