Our bodies are strengthened by taking exercise.  ________，our minds are developed by learning. 

. Bob is____ honest boy, and he won’t tell lies.

It is well known to all that a machine needs fuel to run;    ,man needs food to live on.

 So far, several ships have been reported missing _______ the coast of Bermuda Island.

At first the institute refused to purchase the telescope, but this decision was _____ revised.