I don't know the reason ______ you were absent from the meeting, but I'm sure someone will tell me the reason ________ you haven't told me.
To everyone's surprise, Michael claimed __________ ail his homework in just one hour.
Traditionally, women in China are in red clothes on the wedding day, because red is the __________ of happiness and luck.
He was so proud that he __________ others' help.
A teacher is __________ to be patient and not to lose his temper whatever mistakes his students make.
It __________ her to feel his arms around her.