第1个回答 2010-04-29
don't worry,learn to be happy.
第2个回答 2010-04-29
don't worry! just learn to use english happily!
第3个回答 2010-04-29
Do not worry and learn to be happy.
第4个回答 2010-04-29
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正确答案:
Don't worry!Happiness is the most important!
第5个回答 2010-04-30
Do not worry,
do be happy.