một ô tô khởi hành từ a để đến b cách nhau 120km. một giờ sau ô tô thứ 2 cũng khởi hành từ a đến b với vận tốc lớn hơn vận tốc xe thứ 1 là 10km/h. tính vận tốc của mỗi ôtô biết rằng 2 xe đến b cùng 1 lúc tks

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Cho dạng đúng của động từ trong ngoặc để hoàn thiện câu điều kiện loại 1 và 2 1. If you (see)____________John, I ( tell) ____________him your news 2. You(meet) ____________ my brother if you (go) ____________ to town on Monday 3.Meg sleeps only 5 hours a day. If she (sleep) ____________ longer, her health (improve) ____________ fast 4. If she (want) ____________ to talk to me, she ( ring up) ____________. I guess she doesn’t 5. If you (need) ____________ help, my father (help) ____________ you 6. We (have) ____________ a picnic if the day ( be) ____________ fine’ 7. I (understand)_________________ Mr Brown if he ( speak)______________slowly 8. If you (see) ____________ a policeman, he (show) ____________ you the way 9. I ( finish) ____________ the job tomorrow if I ( can) ____________ 10. If you (give) ____________ him good meals, he ( not be able ) ____________ to work hard 11. You (make) ____________ a fortune if you( take) ____________ my advice. Too bad! 12. I ____________ (not need) an umbrella if it (not rain) ____________ 13. If she (think) ____________ it over carefully, she (form) ____________ a clear opinion 14. If they ( catch) ____________ a bus now, they (arrive) ____________ at half past nine 15. He ( find) ____________ the answers if he (look) ____________ at the back of the book 16. If I ( think) ____________ that about him, I (say) ____________ so aloud 17. If he ( promise) ____________ to behave in the future, his mum ( forgive) ____________ him 18. If you (want) ____________ me to, I (come) ____________for a walk with you 19. If we (can) ____________ come on Sunday, we (come) ____________. I am really sorry 20. If you (wait) ____________ for a moment, the waiter (bring) ____________ you a coffee 21. He (lose) ____________weight if he (stop) ____________eating so much 22. Life (be) ____________ monotonous if we (have) ____________ nothing to do 23. He (not phone) ____________me herre unless it ( be) ____________urgent 24. If they (love) ____________ each other, they ( not fight) ____________ so much 25. If she (be) ____________ patient, I ( try) ____________ to explain 26. If he (do) ____________that again, his father (punish) ____________him 27. If Peter ( ask) ____________Mary, I’m sure she ( marry) ____________ him 28. She (get) ____________ fit if she ( walk) ____________every day 3 km 29. If she (drink) ____________this medicine, she (feel) ____________ much better 30. He (be) ____________ very pleased if it (be) ____________really true