Tom has been out of work for two years, so he has difficulty _____.

31. The decision ______ Internet addictionas a mental disorder hascaused much debate.

All we needa small piece of land where we can plant various kinds of fruit trees throughout the growing seasons of the year.

He fell off the bike ________.

Many people agree that there has never been a more splendid opening ceremony than ______ of the Beijing Olympic Games in history.