根据句意及首字母提示在横线处填写上恰当的单词，使句子意思完整。语法正确。

1.  Don't be w______ about your English study.

2.  It is a private question.  I  r______ to answer it.

3. The conductor can o______ you something to drink and eat on the train.

4. The teacher w       __   that these problems might be too hard for her students.

5.  You can't take photos here without p   ___   

6. The r      __     of the eggs have gone bad. Please go and buy some.