（二）                Bicycle riding is a very hot sport in modern time. You can seemore and more people riding bicycles with their family for funon weekends. What’s more, you can even see some people goingto work on   26.  . However, people ride bicycles fordifferent reasons(理由).   27.  , some people think it isgood for their health.          Besides, some think riding bicycles can   28.   moremoney than driving. Others think they can do something to relax（休閒）without hurting the earth. No matter(無論)   29.   ,it is really helpful   30.  for the riders themselves   30.   for the earth. So, let’s go bicycling!
【題組】26.
(A) theirs
(B) their
(C) yours
(D) his