The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good ______

In the past ,the miners had to be extremely         to bear the uncomfortable conditions at mines.

I can guess it would be _____ if he knew the truth.

Encourage your children to try new things, but try not to ___ them too hard.

Don’t try to _____ your boss; he won’t plan to employ me—a fresh student.