Almost everyone has his own strengths and weaknesses. It is ______ others are weak that maybe you have a great advantage.
The road is covered with snow. I can’t understand ______ they insist on going by motorbike.
You are saying that everyone should be equal, and this is ______ I disagree.
Is that the reason __________ you are in favor of Obama for the second round?
--Look! The light in the study is still on. --Sorry, I forgot __ it off.
The ________ temperature of the human body is about 37 degrees centigrade.