As is known to all, nobody in the world is perfect. Everyone has his/her own _____.

It’s reported that workers on London’s underground train network will go on strike（罢工）in ________ with colleagues losing their jobs at ticket offices. 

Englishmen usually don’t ask each other about ___ affairs.

The collapse of the World Trade Center has put US economy in a difficult __________.

 He's the kind of man who is fond of _____ compliments to other men's wives.