题目内容：

根据句意用括号中单词的适当形式填空，使句子的意思完整、正确。

1.The young man was too late, but __________ (lucky) he caught the train.

2.The little giant Yao Ming is 2.26 metres in __________ (high).

3.Suzy taught ___________(she) how to do DIY. How clever she was!

4.No one helped the old man and he felt ___________ ( help ).

5.Kitty was unhappy because she did the __________(bad) in the English exam.