12. We thought the figures were correct. A. Unless B. Although 2 we have now discovered some errors. C. Since D. However 13. The noise was so loud that we all A. must B. have to 14. Every day, Peter's mother drives him to school. However, today, he his father. .wear ear- protectors C.should B. can be kept A. was taken B. is being taken 15. - Mai: "How fashionable a pair of trainers you have!" 11 - Nam: C. is taking in the fridge for one or two months. C. can not be kept D. had to A. Do you want to know where I bought them? B. Thanks for your compliment. C. I know it's fashionable. D. Yes, of course. 16. The meat A. can keep D. took to scho D. can be keep