I/ Verb form 1. They used (be) friends when they were students. 3. She (be) in the bar for her boyfriends when you came to the bar ? 4. When I come to Paris, I (call) you. 5. When she opened the door, everyone (say) “happy birthday” to her. 6. When she was out, I (feel) very tired so I (go) to bed. 7. Don’t open the radio. Our children (learn). 8. They used (not smoke) when they were students. 9. There used (be) a lot of trees in the region when we lived there. 10. We (wait) for Jane when suddenly Louis came around the corner. 11. I suggest (telephone) the hospitals before (ask) the police (look) for him. 12. After (hear) the conditions I decided (not enter)or the competition. 13. You had better (do) more exercises. You are getting fat. 14. Please stop (worry) about me. I’m old enough (look) after myself. 15. Please get there on time I hate (wait) 16. He postponed (make) _________a decision until it was too late (do) ___________anything. 17. Try (forget) _____________it; It isn’t worth (worry) _____________about it. 18. There is no point in (remain) ____in a dangerous place if you can’t do anything (help) ___the people who have (stay) ____there. 19. The horse won’t be well enough (run) _____in tomorrow’s race. He doesn’t seem (have) _____recovered from his long journey. 20. They are accustomed to (work) under high pressure. 21. On our first day in London, our guide (tell us / what / do) in London. She (show us / where / catch) the nearest bus or underground. We also (learn / how / buy) tickets for the London underground. On our second day, we (not know / where / go) on a sight-seeing tour. We (ask our guide / where / get) tickets for the sight-seeing tours. She (explain / where / find) the tour guides and (how much / pay) for a sight-seeing tour. On the sight-seeing tour we (find out / how / hop off and on the busses to see as much of London as possible. We soon (know / which bus / wait for) at the stop. We only (wonder / what / visit) first.

1 we .... eat sweets in the classrooms A can B must C mustn't D don't have to 2 I .... do my home work . my teacher said so A can B mustn't C have to D don't have to 3 this is the smoking room at this airport . you ... smoke in this room A must B mustn't C can D don't have to 4 I ...,.. listen to the music i like . my present like it too A can't B must C mustn't D don't have to 5 i .... watch TV late at night . My present say I must go to bed early A can't B must C can D don't have to 6 we ... be quiet A must B mustn't C has to D don't have to 7 you ... speak on the mobile phone on an aeroplane A can B must C mustn't D don't have to 8 you ... put the rubbish into the bin A must b mustn't c has to D don't have to 9 you ... take photos in this museum . It's a against the ruler A must B can C mustn't D don't have to 10 you ... make noise in this area . A can B must C mustn't D don't have to làm và giải thích giúp mình nhé

Ở vùng núi trường sơn năm phía tây và tây nam hình thành các cao nguyên xếp tầng có độ cao thấp hơn chủ yếu do

Một trường học có ba lớp 7 biết rằng 2/3 học sinh lớp 7A bằng số học sinh lớp 7B và bằng 4/5 số học sinh lớp 7C. Lớp 7C có số học sinh ít hơn tổng số học sinh hai lớp kia là 50 bạn. Tính số học sinh mỗi lớp

giúp mình với mình cấn gấp ấyy hứa vote 5*

có 5 thợ dệt làm trong 8 giờ được 240 sản phẩm hỏi nếu muốn làm đươc 192 sản phẩm trong bao nhiêu lâu

Mn vẽ hình coan nài thành anime cho tui nhé :)))) < Nếu vẽ mắt thì mắt là màu xanh biển nhạt nhé >

viết cho mình khoảng 5 pt khó của phản ứng oxi hóa khử

a) 17 ² - 15 ²= b) 4 ³ -2 ³ + 5 ²= 2.Tìm *, * ∈ N a) 2*-15=17 b)4*:4 ³=64 c)2 × 5*=50 d)5*+5*+2=650 ⇒( là *+2) e) 3*+2 = 81 ⇒( là *+2) f) *mũ 10 = 1* g) 5*.5 ² = 625

Giải và dịch giúp mình nhé Cần trước 4h