Read the following passage, then choose the correct answer to questions.

Pets can improve your life

        The role of animals in helping people recover from a range of health and emotional problem has long been widely recognized. Now a survey (21)______ is reported in the Journal of Personality and Social Psychology appears to show that owning a pet can benefit healthy individuals, too. A number of experiments, (22)______ by two universities in the United States, indicate that pet owners are generally happier, (23)______, fitter, more confident and better able to cope with everyday issues than non – owners.

       The researchers discovered that individuals have just as close a relationship with the key people in their lives (24)______ they have with their pets. And although they found no (25)______ that people choose emotional relationship with pets over relationships with (26)______ people, a study of universities showed that owning a pet helped them get over the break-up of a relationship with a partner.

     Now a survey (21)______ is reported in the Journal of Personality and Social Psychology appears to show that owning a pet can benefit healthy individuals, too.