阅读理解

　　Larry is going to be a pilot．He wants to fly an airplane．But Larry is not a rich man．He doesn't have an airplane．He has only a chair．Larry ties 45 big balloons to his chair and then sits in the chair．The chair goes up．

　　For a few minutes,everything is fine．The view from the chair is beautiful．Larry can see houses and trees below him．He is happy．He is flying!

　　The chair goes up very high．Larry is afraid．“I don't want to go very high,” Larry thinks．“I want to go down a little．” With a small gun,Larry shoots 10 balloons．Then something terrible happens．Larry drops the gun,and it falls to the ground．Larry can't shoot more balloons．The chair goes up and up．

　　Larry is three miles above the ground．Airplanes are flying over him and under him．Larry has a small radio．“Help! Help!” he says into the radio．“I'm flying in a chair,and I want to come down!” People hear Larry,but they can't help him．

　　Larry flies in the chair for 45 minutes．Then the balloons begin to lose air,slowly the chair comes down,and Larry is back on the ground．He is not hurt．

根据短文内容，回答问题。

1．What does Larry want to be?

________

2．Why does the chair go up into the air?

________

3．What does he do when the chair goes up higher and higher?

________

4．Do the airplanes give him any help?

________

5．Why does the chair come down at last?

________