Personal space is a term that refer

Personal space is a term that refers ___(86)___ the distance we like to keep
between ourselves and other people. When ___(87)___ we do not know well gets too
close we usually begin to feel uncomfortable. If a business colleague comes closer than
1,2 metres, the ___(88)___common response is to move ___(89)___. Some interesting
___(90)___ have been done in libraries. If strangers come too close, many people get up
and leave the building; others use different methods such as turning their back on the
intruder. Living in cities has ___(91)___ people develop new skills for dealing with
situations ___(92)___ they are very close to strangers. ___(93)___ people on crowded
trains try not to look at strangers; they avoid skin contact, and apologise if hands touch
by mistake. People use newspapers ___(94)___ a barrier between themselves and other
people, and if they do not have one, they stare into the distance, ___(95)___ sure they
are not looking into anyone' s eyes.