一道完形填空,请大家帮我分析一下为什么十九空选A

一道完形填空,请大家帮我分析一下为什么十九空选A
As young students,you have many dreams,These dreams can be very _16_,such as becoming tamous seientists ,they can _17_be small,such as singing the first in the race in class.
When you find a _18_,how do you deal with it?Do you ever try to -19_ your drean?
It fact ,everyone run make his dream real .The rist thing you must do into _20_what your dream is .Keep telling yourself what you want every day.Then you dream will come true falser.
The _21_thing is that you must never give up your dream.There will be _22_on the rouad to your dream.But the biggest difficulty comes from _23_.You need to decide what is the most _24_.Certainly.studying instead of watching TV will help better exam result.
As you get close to your dream,you may _25_a lot.It is really good for you to have your own nice dream.
A16.A.big\x05\x05\x05B.small\x05\x05\x05C.nice
C17.Anever\x05\x05B.seldom\x05\x05\x05C.also
B18.A.result\x05\x05B.dream\x05\x05\x05C.chance
aC19.A.realize\x05\x05B.forget\x05\x05\x05C.find
C20.A.share\x05\x05B.test\x05\x05\x05C.remember
B21.A.first\x05\x05\x05B.second\x05\x05\x05C.third
A22.A.difficulters\x05B.sachess\x05\x05\x05C.happipess
B23.A.himself\x05\x05B.yourself\x05\x05C.myself
C24.A.attractive\x05\x05B.interesting\x05\x05C.important
B25.A.realx\x05\x05B.change\x05\x05\x05C.promise

ealize your dream
实现你的梦想