A. complete the following sentences with a suitable preposition. 1. it's time for you to get ready. mark is picking you … ＿ in half an hour. 2. this tv series focuses … ＿ the problems of teenage life. 3. in some countries black is associated … ＿ mourning. 4. i would like to talk to the manager … ＿ person. is he available? 5. the aim … ＿ this music festival is to bring young people from different countries closer together. 6. he is suffering … ＿ a terrible cold. 7. i am veryenthusiastic . ＿ our two-day trip to the ski resort.

1. if you had  brought me the book, i should have read it. 2. if he didn't ring me up, i woudn't come. 3. if he hadn't written to me, i shouldn't have answered him. 4. i wish i had a tie to match my suit. 5. the doctor suggested that she had a long rest in the crimea. 6. if i had been  you, i should have  appologised to her. 7. you wouldn't have so many accidents  if you drove slowly. 8. if he were in, he would answer the phone. 9. if you had passed your examination, we should have a celebtarion.  10. what might happen if i pressed the button? 11. i should not have taken your umbrella if i had known that it was the only one you had. 12. if he knew it was dangerous he wouldn't come. 13. i shouldn't have gone there if i had been you. 14. he would have been the best pupil in the class if he had worked harder. 15. we would have stayed at home if we had known he was comung. 16. he might have understood everything if you had spoken not so fast.