Oxygen is often stored as a liquid, although it is used () as a gas.

单项选择题Under no () should we be reckless of consequence and make hasty decisions.

单项选择题I have heard () he will come tomorrow.

单项选择题Obsessive () can be very irritating.

单项选择题Please enter your () when you pay.

单项选择题I have made up my mind to go back to () I lived when I was young to work.

单项选择题She is continually () her position authority by getting other people to do things for her.

单项选择题Food is to men () oil is to machine.which

单项选择题It is his first visit to Europe as the ().

单项选择题The aim is neither to judge nor to force forgiveness, but rather to () understanding.

单项选择题Jack won the championship of the competition, () made the whole family excited.