根据句意及首字母或汉语提示写出单词。
If the s        get worse, consult your doctor.
He a         a stamp to the letter.
In the second experiment they o        a very clear result.
It's impossible to e        these results without knowing more about the research method employed.
Journalists  were  frantically(疯狂地)  r        the new Prime Minister's background, family and interests.
The operation p        a complete success.
People highly praise e         because they contribute a lot to the cause of education
The guests present at the party yesterday were          (主要) our son's classmates.
You need to double check the data when you have finished in order to avoid any possible I          (不准确性)．
If you have any questions, you can turn to the dictionary for ______．