_____ is known to us all is that to work hard to achieve a goal is more important than only to have a goal.

 In some countries, ____ is called "equality" does not really mean equal rights for all people.

.Few people paid full attention to their health conditions _____ they were seriously ill.

Progress so far has been very good. ______, we are sure that the project will be completed on time.

Milk will turn sour soon on hot days ______ it is stored in the refrigerator．