شرکت در آزمون آنلاین انگلیسی 3 - انگلیسی 3 | آزمون شماره 10608

The boss told the workers what he wanted done, but let them ......... how best to do it.

We do not always remember that it is a great  ..................... when everyone in our family feels all right . We should appreciate it.

I tried all possible … to succeed in the business, but I couldn`t do it.