题目内容：

根据句意及所给的中文，写出恰当单词，使句子的意思完整、正确。

1.He broke his bowl because of his ____________(粗心)．

2.______________ (无论何时) I see you, I can’t help smiling．

3.You should fly your kite __________ (对抗，与……相反) the wind．

4.If you want to __________ (成功), you should keep your feet on the ground．

5.He learned this lesson the hard way — from his own ___________(个人的) experience．