As a kid, everyone wants to learn how to ride a bike. Here is some advice to_1_ you be on your way.
The bike. Start with a bicycle and it’s small enough for your feet to touch the _2_. If you lose your balance, you can put your feet to the ground _3_.
Training grounds. You need a big place for the first part of your practice. Be sure to wear something to keep _4_.
Keeping your balance. It’s very important to learn how to keep your balance. You may practice this easily. _5_ your bike to the higher place. Sit on the bike seat  _6_both feet on the ground. Lift both feet a few inches to let the bike roll down. If you start to fall, just put your feet on the ground. Try practicing this several times _7_ you get your balance.
Pedaling(踩动). After you get your balance, it’s time to _8_ learning how to pedal. Start by sitting on the bike seat. With your left foot on the ground and your right foot on the pedal, then push _9_ on the pedal. Push off with your left foot. Keep on practicing until you learn it well.
Braking(刹车). Catch them lightly at first, slowly increasing the pressure to get to a full _10_. Remember that braking hard while going fast can cause you fall over.

With a determined(坚定的) look on his face, Chicago’s Michael McCarthy held on to the banister(扶手) and climbed to the top of the Willis Tower not long ago. The Tower stands 1,451 feet(442 meters) tall, the＿21＿ building in the US.
As he got to the last step, McCarthy ＿22＿ fell down, but that didn’t stop him. The 14-year-old boy finally finished climbing the 2,109 steps and arrived at the top, where he ＿23＿cheers from many people.
“I just want to show people that ＿24＿ a kid with no legs can do it, anyone can do it,” McCarthy said.
McCarthy, who was born without legs, has to wear prosthetic legs(假肢) and use a stick to walk. But McCarthy has a strong 25 . He believes having a disability(残疾) shouldn’t stop anyone  26  achieving his or her success.
He has been in a special school  27  he was four. When he decided to climb the Willis Tower, his teacher, Jeff Kohn, was   28  by his determination(决心) and offered to help train him. They   29  more than ten hours practicing climbing stairs and keeping balance with the prosthetics and sticks on the steps every day. “  30  seems that he never knows how difficult it is.  31  I was so tired that I asked him to rest for a day,”said Kohn. “But he said he was still full of energy and wanted more  32 .”
Kohn always walked with McCarthy for the climb. “I   33   the last 10 floors, he went faster,” said Kohn. “He’s the most craven sportsman I’ve ever trained.”
McCarthy said he was   34  of himself and that the tower now holds special meaning. “When I’m older, I’ll   35  to the building and say ‘Look at this building I climbed’,” he said.