You and your partner specialise in designing structures for electrical transmission grids. You are currently working on a cable support concept for power lines near wind farms exposed to severe weather. You have come up with the following design. Hold a short meeting to evaluate your design concept. Explain the forces acting on the structure.

1. I (was sitting) in an armchair and ( thinking) of rny coming trip across the North Sea when the door suddenly ( opened) and an old friend of mine whom I (had not seen) for a very long time ( entered) the room. 2. She ( came) to see us just at the time when we (were having) dinner. It (was) the first time I (had seen) her. 3. I ( saw) him just as he (was leaving) the hotel. 4. I (had not seen) him before we ( met) at the concert. 5. He (had left) the house before I ( had) time to ask him anything. 6. He (told) me he (had learnt) it from the newspaper. 7. He ( entered) the room, (took) something from the desk and (went) out. 8. There (were) two men in the room. One of them (was writing) something while the other (was reading) a newspaper. 9. He (did not  tell) me that he (had received) a telegram from her. 10. I ( asked) him if he ( knew) where she ( lived). I ( said) I (did not know) her address. 11. He (asked) me if I (could) give him your address. 12. She (said) that he (had given) her the wrong address. 13. I (asked) him where he (had put) my letter. 14. He (told) us that they (had spent) all the money. 15. After spending several days in Paris he ( felt) lonely and ( wanted) to return home. 16. I (think) he has already ( gone) home. 17. I ( found) the old man in the garden. He (was talking) to some children who (were standing) around listening to him. 18. He (was speaking) a language we had never ( heard) before.