根据汉语提示完成单词。

1．I       (意识到)that it doesn't matter if you trouble him. Because he is a kind man.

2. They are talking about learning the     (挑战)．

3.    (或许)the policeman knows where she is．

4. At last, the student understood the meaning of the story____(完全地):

5．Our teachers are very____(感动)．