Fill in the blanks in the following text with articles (a/an/the) as necessary. Some of the blanks may not require an article. Put a cross mark (×) in those blanks.
In (a) ______ twenty-first century (b) ______ number of undesirable practices have emerged as mobile phone usage spreads into everyday life. In (c) ______ workplace, employers report that many members of their staff use (d) ______ individually owned mobile phones to socialize during work hours. It results in (e) ______ loss of productive work time and effort. In social settings, people comment that they are irritated by (f) ______ intrusion of mobile phone conversations in (g) ______ restaurants. theatres and other public venues. Another worrying trend is that face to face social interaction seems to have been taken over by (h) ______ mobile phone devices. For example, (i) ______ analysis of (j) ______ survey of 2000 teenagers reveals that 93 percent of today's youth terminate relationships by voice mail or text message.