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Giúp mk vs mk sẽ vote 5* mk cần gấp vào thứ 5

Giúp em bài 6 và ba câu d,e,f bài 3 với

Giúp mình với mình sẽ cho bạn 5 sao

IV. Fill in the blank with “for” or “since”. 1. It has been raining ...................... lunchtime. 2. My boss will go away ...................... the next ten days. 3. I’m staying in England ...................... a year. 4. She has lived in London ...................... 1985. 5. Please hurry up! We have been waiting ...................... an hour. 6. I have known her ...................... January. 7. Nam’s father has worked in this company ...................... 20 years. 8. Have you learned English ...................... a long time? 9. I haven’t seen Tom ...................... we left school. 10. The house is very dirty. We haven’t cleaned it ...................... years. 11. My sister has been a student ...................... two years. 12. We’ve lived here ...................... 1990. 13. I haven’t seen Linh ...................... my birthday party. 14. She has been away ...................... a year. 15. We’ve already waited ...................... five days. 16. They haven’t had any rain ...................... very long time. 17. That building has been there ...................... the 19th century. 18. I have known them ...................... many years. 19. They have only been there ...................... a few minutes. 20. My brother works for a company called FPT. He has worked for them ...................... he

giải thích ra giúp mình, mình cần GẤP mai nộp!

Đặt tính rồi tính: 8,748 : 3,24

x:50 và -30 <x <30 giup voi ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Mn lm hộ mk nhé. Mk cảm ơn nhiều ạ

M.n giúp em bài bài 6a 6b 13 đc ko