There is no doubt that a small child has to learn to keep its _________ before it can walk far.
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.
The only thing __________ we should do now is try our best to prepare for the Academic proficiency test.
Mr. Liu insists that the price of petrol _____ too high and that he ____ his car.