Climbing is a very healthy sport．It can m        people strong and h       ．My friend is very f      and she is very w        about it．Then a friend tells her climbing can help her．So she often g       climbing every Saturday．And now she is very slim(苗条的)and healthy．She still keeps climbing the mountain now. If you want to go climbing, you’ll have a lot of t       to do．First, you should wear a p       of comfortable sports shoes．Then, you should h       a good rest before you climb a mountain．Last, it’s better to have a partner(同伴) w      you, so you can help each  o       ．Come on, friends, let’s go climbing at weekends．