题目内容：
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。 增加：在缺词处加一个漏字符号(^)，并在其下面写上该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：
1．每处错误及其修改均仅限一词；
2．只允许修改l0处，多者(从第ll处起)不计分。
Goodmorning !
Today, my topic is the valuable of time.Time, like the proverb says, is mon-
ey. Thismeans that if our time is good employed, it will turn out a lot of useful and importantpiece of work when the proper opportunity" come. Although all time is precious,but the time of our childhood and of our youth is more precious than any periodof our existence because those are the periods which we can acquire knowledgeand develop our abilities. If we allow these morning hours to slip away, we shallnever able to make up for the loss.
Let those who think nothing of waste timeremember this. Thank you for your
listening!
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