根据句子意思及首字目提示写出单词的正确形式。
Talking about others' p____  life is not polite.           
I have r____ a special present from my pen pal in Australia.  
Last month, I spent a w____  vacation in the countryside.
I have two pens, but n____  of them works well.
Go down this street and turn left at the second t____ lights.
I'm c____ that he will win first prize in the competition.

Some singers sing songs to r____ money for the poor children.

Rose is so c____  that there is no mistake in her homework.

人体中成熟红细胞的平均直径为0.0000077m，用科学记数法表示为____m.