_____in the sports world，a sportsman needs to train constantly to keep himself in best condition．
A． Survive B． Surviving
C． To survive D． Survived
Teenagers ________ their health because they play computer games too much．
A． have damaged B． are damaging
C． damaged D． will damage
Peter’ shirt looked just the same as Tom’s，but it cost ______ his．
A． as much twice as B． twice as much as
C． much as twice as D． as twice much as
We can’t figure out ______ quite a number of insects and birds are dying out．
A． that B． as C． why D．when
______ environmental damage is done，it takes many years for the ecosystem to recover．
A． Even if B． If only
C． As if D． Once
假设你是红星中学高三（1）班的学生李华，请根据以下四幅图的先后顺序，为校刊“英语园地”写一篇短文，讲述上周你参加学校英文歌曲演唱比赛的过程。词数不少于60。
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