15. It had been a trying afternoon, ...... at about six o’clock in the television breaking down. a. leading b. culminating c. arriving d. finalising 16. He has been work as a window cleaner even though he has no .......... for heights. a. head b. skill c. ability d. balance 17. Despite the high divorce rate, the ......... of marriage remains popular. a. practice b. habit c. institution d. state 18. He clearly had no intention of doing any work, although it was only a week .......... the exam.