Tìm tổng hai số hạng biết số hạng thứ nhất là 35 và số hạng thứ hai là số liền sau của số hạng thứ nhất

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giúp em bài với ạ: nhận diện cấu trúc hộ em với ak em đang tìm một lời giải chi tiết ak - ai biết thì comment ak em đang cần gấp !!! 1. It took the director 2 hours ....... the new plan to us(explaining/to explain/ explain/explained) 2. It's easy ....... animals on the road in daylight but sometimes at night it is difficult..... them. (to see/ to avoid/ to hit, to see/ avoid/ hitting, to see/ to avoid/hitting, seeing/ to avoid/hitting) 3. I caught him...... over my wall. I asked him ...... but his refused.... anything, so in the end I had.... him......(climbing/to explain/ to say/ to let/ to go, climbing/to explain/ to say/ let/go; climb/explain/say/let/go; climbing/to explain/to say/to let/go) 4. It is pleasant ..... by the fire at night and .... the wind...... outside( to sit/to hear/to howl; to sit/ hear/howling; to sit/ to hear/ howling; both B & C are correct) 5. There was no way of ....... out of the building expect by.... down a rope and An was too terrefied..... this (getting/climbing/to do; getting/climbing/doing; to get/to climb/to do; get/climb/do) 6. Ask him....in. Don't keep him .... at the door.( to come/to stand; to come/standing; to come/ stood; come/stand) 7. It's no good ...... to him; he never answers letters. ( to write/ writing/ to writing/ write0 8. I'm jobless now. I wish I... a job(have/had/will have/ hadhad0 9. I spent half a year ... this boat. ( to build/ building/built/ on building) 10. I can't help ...... him inspite of his faults.( admire/ admired/ to admire/ admiring) 11. Are you .... for your final examination(prepare/ to prepare/ prepared/ already) 12. You had your house ..... last month; didn't you?(repair/ repaired/ to repair/ repairing0 13. After ..... that chapter carefully, they began their experiments(reading/read/having been read/have read) 14. he is looking toward to.... his old friends.(meet/havemet/meeting/met0 15. I hope you don't mind ...... to come and meet her(to be asked/ you were asked; being asked; we asked you) 16. My sister is busy ..... aletter(is writing, to write. at writing/ writing) 17. He couldn't make anybody ...... that he was innocent(believes/ believed/ believe/ to belived)