Eating is so important to Chinese ______ we have the term "food culture". But recent reports have the public worried about ______ is on their tables.
Living in the central Australia desert has its problem, _____ obtaining fresh water isn’t the least.
All _____ is a continuous supply of the necessities of life.
We need a chairman _____.
_____ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
In some countries, _____ is called “equality” doesn’t really mean equal rights for all people.